diff --git a/src/ClassicGame.js b/src/ClassicGame.js
index ac6adb6..98d9aff 100644
--- a/src/ClassicGame.js
+++ b/src/ClassicGame.js
@@ -42,43 +42,43 @@ module.exports = Class( 'ClassicGame' )
      * LTG loader
      * @type {LtgLoader}
      */
-    'private _ltgLoader': null,
+    _ltgLoader: null,
 
     /**
      * Tile masker
      * @type {TileMasker}
      */
-    'private _masker': null,
+    _masker: null,
 
     /**
      * Tiles
      * @type {Object.<Object>}
      */
-    'private _tileSet': null,
+    _tileSet: null,
 
     /**
      * Set of available levels
      * @type {LevelSet}
      */
-    'private _levelSet': null,
+    _levelSet: null,
 
     /**
      * Event handlers
      * @type {Object.<Function>}
      */
-    'private _callback': {},
+    _callback: {},
 
     /**
      * Performs level rendering
      * @type {LevelRender}
      */
-    'private _render': null,
+    _render: null,
 
     /**
      * Classic game object factory
      * @type {ClassicGameObjectFactory}
      */
-    'private _gameObjFactory': null,
+    _gameObjFactory: null,
 
 
     /**
@@ -96,7 +96,7 @@ module.exports = Class( 'ClassicGame' )
      * @param  {string}  ltg_data  binary string containing LTG file data
      * @param  {string}  lvl_data  binary string containing LVL file data
      */
-    __construct: function( document, ltg_data, lvl_data )
+    __construct( document, ltg_data, lvl_data )
     {
         const _self = this;
 
@@ -126,7 +126,7 @@ module.exports = Class( 'ClassicGame' )
      *
      * @return  {ClassicGame}  self
      */
-    'public renderTo': function( ctx, event_target )
+    renderTo( ctx, event_target )
     {
         // if there is a previous renderer, free its canvas before
         // continuing (to both clean up and to free any locks, allowing for
@@ -178,7 +178,7 @@ module.exports = Class( 'ClassicGame' )
      *
      * @return  {ClassicGame}  self
      */
-    'public setTileData': function( data, callback )
+    setTileData( data, callback )
     {
         // get tile metadata
         const _self = this,
@@ -202,7 +202,7 @@ module.exports = Class( 'ClassicGame' )
      *
      * @return  {ClassicGame}  self
      */
-    'public setLevelData': function( data, callback )
+    setLevelData( data, callback )
     {
         this._levelSet = LevelSet( data, ClassicLevel );
 
@@ -222,7 +222,7 @@ module.exports = Class( 'ClassicGame' )
      *
      * @return  {ClassicGame}  self
      */
-    'public on': function( name, callback )
+    on( name, callback )
     {
         this._callback[ name ] = callback;
         return this;
@@ -236,7 +236,7 @@ module.exports = Class( 'ClassicGame' )
      *
      * @return  {ClassicGame}  self
      */
-    'private _trigger': function( name )
+    _trigger( name )
     {
         if ( typeof this._callback[ name ] === 'function' )
         {
diff --git a/src/ClassicGameObjectFactory.js b/src/ClassicGameObjectFactory.js
index f20cb9a..6f7d73d 100644
--- a/src/ClassicGameObjectFactory.js
+++ b/src/ClassicGameObjectFactory.js
@@ -27,22 +27,22 @@ module.exports = Class( 'ClassicGameObjectFactory' )
     .implement( GameObjectFactory )
     .extend(
 {
-    'private _objs': {},
+    _objs: {},
 
 
-    __construct: function()
+    __construct()
     {
         this._initObjs();
     },
 
 
-    'public createObject': function( id )
+    createObject( id )
     {
         return ( this._objs[ id ] || GameObject )( id );
     },
 
 
-    'private _initObjs': function()
+    _initObjs()
     {
         this._objs = {
             dirt:  null,
diff --git a/src/ClassicTileDfn.js b/src/ClassicTileDfn.js
index d506850..a40b0ec 100644
--- a/src/ClassicTileDfn.js
+++ b/src/ClassicTileDfn.js
@@ -43,7 +43,7 @@ module.exports = Class( 'ClassicTileDfn' )
      *
      * @return  {Array.<Array.<string,number>>}  tile definition
      */
-    'public getTileDefinition': function()
+    getTileDefinition()
     {
         return [
             [ 'dirt',   0 ], /* dirt */
@@ -121,7 +121,7 @@ module.exports = Class( 'ClassicTileDfn' )
      *
      * @return  {Array.<number>}  tile width, tile height, tiles per row
      */
-    'public getTileDimensions': function()
+    getTileDimensions()
     {
         return [ 32, 32, 10 ];
     }
diff --git a/src/FileLoader.js b/src/FileLoader.js
index ba63145..f99e2f3 100644
--- a/src/FileLoader.js
+++ b/src/FileLoader.js
@@ -36,13 +36,13 @@ module.exports = Class( 'FileLoader',
      * DOM file element to watch
      * @type {HTMLInputElement}
      */
-    'private _element': null,
+    _element: null,
 
     /**
      * Callback to call on file load
      * @type {function(Error,string)}
      */
-    'private _callback': null,
+    _callback: null,
 
 
     /**
@@ -51,7 +51,7 @@ module.exports = Class( 'FileLoader',
      * @param  {HtmlInputElement}  element  file element to monitor
      * @param  {FileReader}        reader   file reader
      */
-    __construct: function( element, reader )
+    __construct( element, reader )
     {
         if ( element.type !== 'file' )
         {
@@ -75,7 +75,7 @@ module.exports = Class( 'FileLoader',
      *
      * @return  {FileLoader}  self
      */
-    'public onLoad': function( callback )
+    onLoad( callback )
     {
         this._callback = callback;
 
@@ -100,7 +100,7 @@ module.exports = Class( 'FileLoader',
      *
      * @return  {undefined}
      */
-    'private _loadFile': function( event )
+    _loadFile( event )
     {
         const _self = this,
               files = event.target.files;
diff --git a/src/Game.js b/src/Game.js
index e2dad64..d884729 100644
--- a/src/Game.js
+++ b/src/Game.js
@@ -35,7 +35,7 @@ module.exports = Interface( 'Game',
      *
      * @return  {Game}  self
      */
-    'public renderTo': [ 'ctx' ],
+    renderTo: [ 'ctx' ],
 
 
     /**
@@ -46,7 +46,7 @@ module.exports = Interface( 'Game',
      *
      * @return  {Game}  self
      */
-    'public setTileData': [ 'data', 'callback' ],
+    setTileData: [ 'data', 'callback' ],
 
 
     /**
@@ -57,7 +57,7 @@ module.exports = Interface( 'Game',
      *
      * @return  {Game}  self
      */
-    'public setLevelData': [ 'data', 'callback' ],
+    setLevelData: [ 'data', 'callback' ],
 
 
     /**
@@ -71,5 +71,5 @@ module.exports = Interface( 'Game',
      *
      * @return  {Game}  self
      */
-    'public on': [ 'name', 'callback' ]
+    on: [ 'name', 'callback' ]
 } );
diff --git a/src/LtgLoader.js b/src/LtgLoader.js
index 0f8dd9c..22b88ff 100644
--- a/src/LtgLoader.js
+++ b/src/LtgLoader.js
@@ -54,17 +54,17 @@ const Class = require( 'easejs' ).Class;
 module.exports = Class( 'LtgLoader',
 {
     /** various data segment byte offsets and lengths **/
-    'private const _POS_NAME':   [ 0, 40 ],
-    'private const _POS_AUTHOR': [ 40, 30 ],
-    'private const _POS_DESC':   [ 70, 245 ],
-    'private const _POS_ID':     [ 315, 5 ],
-    'private const _POS_MOFF':   [ 320, 4 ],
+    'const _POS_NAME':   [ 0, 40 ],
+    'const _POS_AUTHOR': [ 40, 30 ],
+    'const _POS_DESC':   [ 70, 245 ],
+    'const _POS_ID':     [ 315, 5 ],
+    'const _POS_MOFF':   [ 320, 4 ],
 
     /**
      * Beginning of game bitmap (one byte past the header)
      * @type {number}
      */
-    'private const _OFFSET_HEADER_END': 324,
+    'const _OFFSET_HEADER_END': 324,
 
 
     /**
@@ -74,7 +74,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {Object}  LTG metadata and bitmaps (sans mask offset)
      */
-    'public fromString': function( ltg_data )
+    fromString( ltg_data )
     {
         const mask_offset = this._getMaskOffsetFromData( ltg_data );
 
@@ -105,7 +105,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  requested segment
      */
-    'private _getDataSegment': function( ltg_data, sgmt, stripnull )
+    _getDataSegment( ltg_data, sgmt, stripnull )
     {
         // strip null bytes by default
         stripnull = ( stripnull === undefined ) ? true : !!stripnull;
@@ -130,7 +130,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  LTG name, null bytes stripped
      */
-    'private _getNameFromData': function( ltg_data )
+    _getNameFromData( ltg_data )
     {
         return this._getDataSegment( ltg_data, '_POS_NAME' );
     },
@@ -143,7 +143,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  LTG author, null bytes stripped
      */
-    'private _getAuthorFromData': function( ltg_data )
+    _getAuthorFromData( ltg_data )
     {
         return this._getDataSegment( ltg_data, '_POS_AUTHOR' );
     },
@@ -156,7 +156,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  LTG description, null bytes stripped
      */
-    'private _getDescFromData': function( ltg_data )
+    _getDescFromData( ltg_data )
     {
         return this._getDataSegment( ltg_data, '_POS_DESC' );
     },
@@ -169,7 +169,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  LTG id, null bytes stripped
      */
-    'private _getIdFromData': function( ltg_data )
+    _getIdFromData( ltg_data )
     {
         return this._getDataSegment( ltg_data, '_POS_ID' );
     },
@@ -185,7 +185,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {number}  LTG mask offset in bytes
      */
-    'private _getMaskOffsetFromData': function( ltg_data )
+    _getMaskOffsetFromData( ltg_data )
     {
         // grab the data and don't bother stripping off the null bytes (it would
         // function the same with them stripped, but let's avoid the confusion
@@ -217,7 +217,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  data URL corresponding to the given bitmap data
      */
-    'private _getBitmapDataUrl': function( data )
+    _getBitmapDataUrl( data )
     {
         return 'data:image/bmp;base64,' + btoa( data );
     },
@@ -236,7 +236,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  game bitmap data
      */
-    'private _getGameBitmap': function( ltg_data, mask_offset )
+    _getGameBitmap( ltg_data, mask_offset )
     {
         const bmp_offset = this.__self.$( '_OFFSET_HEADER_END' );
 
@@ -256,7 +256,7 @@ module.exports = Class( 'LtgLoader',
      *
      * @return  {string}  mask bitmap data
      */
-    'private _getMaskBitmap': function( ltg_data, mask_offset )
+    _getMaskBitmap( ltg_data, mask_offset )
     {
         // the mask bitmap accounts for the remainder of the data
         return ltg_data.substr( mask_offset );
diff --git a/src/TileDfn.js b/src/TileDfn.js
index 031ff34..0755523 100644
--- a/src/TileDfn.js
+++ b/src/TileDfn.js
@@ -103,7 +103,7 @@ module.exports = Interface( 'TileDfn',
      *
      * @return  {Array.<Array.<string,number>>}  tile definition
      */
-    'public getTileDefinition': [],
+    getTileDefinition: [],
 
 
     /**
@@ -115,5 +115,5 @@ module.exports = Interface( 'TileDfn',
      *
      * @return  {Array.<number>}  tile width, tile height, tiles per row
      */
-    'public getTileDimensions': []
+    getTileDimensions: []
 } );
diff --git a/src/TileMasker.js b/src/TileMasker.js
index 3e09076..ed50755 100644
--- a/src/TileMasker.js
+++ b/src/TileMasker.js
@@ -75,49 +75,49 @@ module.exports = Class( 'TileMasker',
      * Canvas 2D context (used for masking and tile slicing)
      * @type {CanvasRenderingContext2d}
      */
-    'private _context': null,
+    _context: null,
 
     /**
      * DOM document
      * @type {HTMLDocument}
      */
-    'private _document': null,
+    _document: null,
 
     /**
      * Tile definition to use for all operations
      * @type {Array.<Array.<string,number>>}
      */
-    'private _tileDfn': null,
+    _tileDfn: null,
 
     /**
      * Width of each individual tile
      * @type {number}
      */
-    'private _tileWidth': 0,
+    _tileWidth: 0,
 
     /**
      * Height of each individual tile
      * @type {number}
      */
-    'private _tileHeight': 0,
+    _tileHeight: 0,
 
     /**
      * Number of tiles per row
      * @type {number}
      */
-    'private _tilesPerRow': 0,
+    _tilesPerRow: 0,
 
     /**
      * Calculated width of tile set provided a tile definition
      * @type {number}
      */
-    'private _setWidth': 0,
+    _setWidth: 0,
 
     /**
      * Calculated height of tile set provided a tile definition
      * @type {number}
      */
-    'private _setHeight': 0,
+    _setHeight: 0,
 
 
     /**
@@ -133,7 +133,7 @@ module.exports = Class( 'TileMasker',
      * @param  {TileDfn}       tile_dfn  tile definition object
      * @param  {HTMLDocument}  document  DOM document
      */
-    __construct: function( tile_dfn, document )
+    __construct( tile_dfn, document )
     {
         if ( !( Class.isA( TileDfn, tile_dfn ) ) )
         {
@@ -169,7 +169,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {undefined}
      */
-    'private _calcSetDimensions': function( tile_dfn )
+    _calcSetDimensions( tile_dfn )
     {
         // these vars are for clarity
         const sizes = tile_dfn.getTileDimensions(),
@@ -210,7 +210,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {TileMasker}  self
      */
-    'public getMaskedTiles': function( bmp_game, bmp_mask, callback )
+    getMaskedTiles( bmp_game, bmp_mask, callback )
     {
         const _self = this;
 
@@ -235,7 +235,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {Array.<number>}  tile width, height and number per row
      */
-    'protected getTileDimensions': function()
+    'protected getTileDimensions'()
     {
         return [ this._tileWidth, this._tileHeight, this._tilesPerRow ];
     },
@@ -257,7 +257,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {undefined}
      */
-    'virtual protected getMaskedTileSet': function( data_mask, callback )
+    'virtual protected getMaskedTileSet'( data_mask, callback )
     {
         const tdata = this._tileDfn,
               len   = tdata.length,
@@ -307,7 +307,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {undefined}
      */
-    'protected appendTileFrame': function( set, id, mask, data )
+    'protected appendTileFrame'( set, id, mask, data )
     {
         const prev = set[ id ];
 
@@ -357,7 +357,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {Object}  image data for the requested tile
      */
-    'virtual protected getMaskedTileData': function( data_mask, x, y )
+    'virtual protected getMaskedTileData'( data_mask, x, y )
     {
         const raw = this.getTileData( x, y ),
               w   = raw.width,
@@ -404,7 +404,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {Object}  image data for tile
      **/
-    'protected getTileData': function( x, y )
+    'protected getTileData'( x, y )
     {
         return this._context.getImageData(
             x, y, this._tileWidth, this._tileHeight
@@ -425,7 +425,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {undefined}
      */
-    'private _renderImage': function( bmp, callback )
+    _renderImage( bmp, callback )
     {
         const _self = this,
               img   = this._document.createElement( 'img' );
@@ -448,7 +448,7 @@ module.exports = Class( 'TileMasker',
      *
      * @return  {undefined}
      */
-    'private _getImageData': function( bmp, callback )
+    _getImageData( bmp, callback )
     {
         const _self = this;
 
diff --git a/src/gameobjs/GameObject.js b/src/gameobjs/GameObject.js
index 33917ce..cd28c0c 100644
--- a/src/gameobjs/GameObject.js
+++ b/src/gameobjs/GameObject.js
@@ -25,27 +25,27 @@ module.exports = Class( 'GameObject',
     'private _tid': '',
 
 
-    __construct: function( tid )
+    __construct( tid )
     {
         this._tid = ''+tid;
         this._pos = 0;
     },
 
 
-    'public getTid': function()
+    getTid()
     {
         return this._tid;
     },
 
 
-    'public cloneTo': function( dest )
+    cloneTo( dest )
     {
         return dest;
     },
 
 
     /* jshint -W098 */
-    'virtual public move': function( dir, c, sc )
+    'virtual move'( dir, c, sc )
     {
         // move in the appropriate direction (action has been pre-configured
         // with the correct direction)
diff --git a/src/gameobjs/Tank.js b/src/gameobjs/Tank.js
index 073aeae..ddaa641 100644
--- a/src/gameobjs/Tank.js
+++ b/src/gameobjs/Tank.js
@@ -24,7 +24,7 @@ const Class      = require( 'easejs' ).Class,
 module.exports = Class( 'Tank' )
     .extend( GameObject,
 {
-    'override public move': function( direction, c, sc )
+    'override move'( direction, c, sc )
     {
         const state = [ 'tleft', 'tup', 'tright', 'tdown' ][ direction ];
 
diff --git a/src/level/ClassicLevel.js b/src/level/ClassicLevel.js
index e44dd95..d5d1d6f 100644
--- a/src/level/ClassicLevel.js
+++ b/src/level/ClassicLevel.js
@@ -57,7 +57,7 @@ module.exports = Class( 'ClassicLevel' )
      * Size of each level in bytes
      * @type {number}
      */
-    'private const _SIZE': 576,
+    'const _SIZE': 576,
 
     /**
      * Game object offset and size
@@ -67,25 +67,25 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @type {Array.<number>}
      */
-    'private const _GOSIZE': [ 0, 256 ],
+    'const _GOSIZE': [ 0, 256 ],
 
     /**
      * Offset and length of level name
      * @type {Array.<number>}
      */
-    'private const _NAMESIZE': [ 256, 31 ],
+    'const _NAMESIZE': [ 256, 31 ],
 
     /**
      * Offset and length of level hint
      * @type {Array.<number>}
      */
-    'private const _HINTSIZE': [ 287, 256 ],
+    'const _HINTSIZE': [ 287, 256 ],
 
     /**
      * Offset and length of author name
      * @type {Array.<number>}
      */
-    'private const _AUTHORSIZE': [ 543, 31 ],
+    'const _AUTHORSIZE': [ 543, 31 ],
 
     /**
      * Offset and length of difficulty level
@@ -94,13 +94,13 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @type {Array.<number>}
      */
-    'private const _DIFFSIZE': [ 574, 2 ],
+    'const _DIFFSIZE': [ 574, 2 ],
 
     /**
      * Tunnel bitmask
      * @type {number}
      */
-    'private const _TMASK': 0x40,
+    'const _TMASK': 0x40,
 
     /**
      * Colors used to identify tunnels
@@ -115,7 +115,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @type {Array.<string>}
      */
-    'private const _TCOLORS': [
+    'const _TCOLORS': [
         '#ff0000', '#00ff00', '#0000ff', '#00ffff', // r g b c
         '#ffff00', '#ff00ff', '#ffffff', '#808080'  // y m w b
     ],
@@ -125,19 +125,19 @@ module.exports = Class( 'ClassicLevel' )
      * Level set data (binary string)
      * @type {string}
      */
-    'private _data': null,
+    _data: null,
 
     /**
      * Level id (1-indexed)
      * @type {string}
      */
-    'private _id': 0,
+    _id: 0,
 
     /**
      * Offset of beginning of level data in bytes
      * @type {number}
      */
-    'private _offset': 0,
+    _offset: 0,
 
 
     /**
@@ -146,7 +146,7 @@ module.exports = Class( 'ClassicLevel' )
      * @param  {LevelSet}  set  level set data
      * @param  {number}       id   1-indexed level id
      */
-    __construct: function( data, id )
+    __construct( data, id )
     {
         this._data = ''+( data );
         this._id   = +id;
@@ -169,7 +169,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {Array.<number>}  array of game objects
      */
-    'public getObjects': function()
+    getObjects()
     {
         const tiles = this._getDataSegment( '_GOSIZE', false ).split( '' );
         let   i     = tiles.length;
@@ -189,7 +189,7 @@ module.exports = Class( 'ClassicLevel' )
      * @param  {string}    name       name of constant containing segment dfn
      * @param  {=boolean}  stripnull  whether to strip null bytes (default true)
      */
-    'private _getDataSegment': function( name, stripnull )
+    _getDataSegment( name, stripnull )
     {
         stripnull = ( arguments.length < 2 ) ? true : !!stripnull;
 
@@ -207,7 +207,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {Array.<number>}  width and height in tiles
      */
-    'public getDimensions': function()
+    getDimensions()
     {
         return [ 16, 16 ];
     },
@@ -218,7 +218,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {Array.<string>}
      */
-    'public getObjectTileLevel': function()
+    getObjectTileLevel()
     {
         // we return these values here instead of returning, say, a constant,
         // because we would have to clone it to ensure that our inner state
@@ -245,7 +245,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {string}  tunnel color
      */
-    'public getTunnelColor': function( oid )
+    getTunnelColor( oid )
     {
         // get the tunnel id by stripping off the tunnel bitmask and then
         // grab the associated color
@@ -260,7 +260,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {boolean}  true if tunnel, otherwise false
      */
-    'public isObjectTunnel': function( oid )
+    isObjectTunnel( oid )
     {
         return ( oid & this.__self.$( '_TMASK' ) );
     },
@@ -271,7 +271,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {string}  level name
      */
-    'public getLevelName': function()
+    getLevelName()
     {
         return this._getDataSegment( '_NAMESIZE' );
     },
@@ -282,7 +282,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {string}  level author name
      */
-    'public getLevelAuthor': function()
+    getLevelAuthor()
     {
         return this._getDataSegment( '_AUTHORSIZE' );
     },
@@ -293,7 +293,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {string}  level hint
      */
-    'public getLevelHint': function()
+    getLevelHint()
     {
         return this._getDataSegment( '_HINTSIZE' );
     },
@@ -311,7 +311,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {number}  0-indexed difficulty level
      */
-    'public getLevelDifficulty': function()
+    getLevelDifficulty()
     {
         const val = this._getDataSegment( '_DIFFSIZE', false );
 
@@ -341,7 +341,7 @@ module.exports = Class( 'ClassicLevel' )
      *
      * @return  {number}  size of level in bytes
      */
-    'public static getLevelSize': function()
+    'static getLevelSize'()
     {
         return this.$( '_SIZE' );
     }
diff --git a/src/level/Level.js b/src/level/Level.js
index 13a646d..65f8b88 100644
--- a/src/level/Level.js
+++ b/src/level/Level.js
@@ -63,7 +63,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {Array.<number>}  array of game objects
      */
-    'public getObjects': [],
+    getObjects: [],
 
 
     /**
@@ -71,7 +71,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {Array.<number>}  width and height in tiles
      */
-    'public getDimensions': [],
+    getDimensions: [],
 
 
     /**
@@ -79,7 +79,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {Array.<string>}
      */
-    'public getObjectTileLevel': [],
+    getObjectTileLevel: [],
 
 
     /**
@@ -94,7 +94,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {string}  tunnel color or reasonable default if invalid obj id
      */
-    'public getTunnelColor': [ 'object_id' ],
+    getTunnelColor: [ 'object_id' ],
 
 
     /**
@@ -102,7 +102,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {boolean}  true if tunnel, otherwise false
      */
-    'public isObjectTunnel': [ 'object_id' ],
+    isObjectTunnel: [ 'object_id' ],
 
 
     /**
@@ -110,7 +110,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {string}  level name
      */
-    'public getLevelName': [],
+    getLevelName: [],
 
 
     /**
@@ -118,7 +118,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {string}  level author name
      */
-    'public getLevelAuthor': [],
+    getLevelAuthor: [],
 
 
     /**
@@ -126,7 +126,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {string}  level hint
      */
-    'public getLevelHint': [],
+    getLevelHint: [],
 
 
     /**
@@ -137,7 +137,7 @@ module.exports = Interface( 'Level',
      *
      * @return  {number}  0-indexed difficulty level
      */
-    'public getLevelDifficulty': [],
+    getLevelDifficulty: [],
 
 
     /**
@@ -145,5 +145,5 @@ module.exports = Interface( 'Level',
      *
      * @return  {number}  size of level in bytes
      */
-    'public static getLevelSize': []
+    'static getLevelSize': []
 } );
diff --git a/src/level/LevelAction.js b/src/level/LevelAction.js
index c3bf1a0..f38dd72 100644
--- a/src/level/LevelAction.js
+++ b/src/level/LevelAction.js
@@ -32,16 +32,16 @@ module.exports = Class( 'LevelAction',
     'const D__MAX':  3,
 
 
-    'private _dir': 0,
-    'private _srcPos': 0,
-    'public srcPos': 0,
+    _dir: 0,
+    _srcPos: 0,
+    srcPos: 0,
 
-    'private _bounds': null,
+    _bounds: null,
 
-    'private _moveCallback':  null,
+    _moveCallback:  null,
 
 
-    __construct: function( bounds,  move_callback )
+    __construct( bounds,  move_callback )
     {
         if ( !( Class.isA( LevelBounds, bounds ) ) )
         {
@@ -55,7 +55,7 @@ module.exports = Class( 'LevelAction',
     },
 
 
-    'public move': function()
+    move()
     {
         const method = [
             'getLeftPos',
diff --git a/src/level/LevelBounds.js b/src/level/LevelBounds.js
index 004f937..9f77ff0 100644
--- a/src/level/LevelBounds.js
+++ b/src/level/LevelBounds.js
@@ -33,13 +33,13 @@ module.exports = Class( 'LevelBounds',
      * Level width (number of tiles)
      * @type {number}
      */
-    'private _mw': 0,
+    _mw: 0,
 
     /**
      * Level height (number of tiles)
      * @type {number}
      */
-    'private _mh': 0,
+    _mh: 0,
 
 
     /**
@@ -47,7 +47,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @param  {Level}  level  level for which bounds should be calculated
      */
-    __construct: function( level )
+    __construct( level )
     {
         if ( !( Class.isA( Level, level ) ) )
         {
@@ -72,7 +72,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @return  {number}  tile position above given position or current position
      */
-    'public getUpperPos': function( pos )
+    getUpperPos( pos )
     {
         return ( this.isAtTop( pos ) )
             ? pos
@@ -90,7 +90,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @return  {number}  tile position below given position or current position
      */
-    'public getLowerPos': function( pos )
+    getLowerPos( pos )
     {
         return ( this.isAtBottom( pos ) )
             ? pos
@@ -109,7 +109,7 @@ module.exports = Class( 'LevelBounds',
      * @return  {number}  tile position left of given position or current
      *                    position
      */
-    'public getLeftPos': function( pos )
+    getLeftPos( pos )
     {
         return ( this.isAtLeft( pos ) )
             ? pos
@@ -128,7 +128,7 @@ module.exports = Class( 'LevelBounds',
      * @return  {number}  tile position right of given position or current
      *                    position
      */
-    'public getRightPos': function( pos )
+    getRightPos( pos )
     {
         return ( this.isAtRight( pos ) )
             ? pos
@@ -143,7 +143,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @return  {boolean}  true if within topmost row, otherwise false
      */
-    'public isAtTop': function( pos )
+    isAtTop( pos )
     {
         // since tile positions are zero-indexed, we know that we're at the
         // top if the level height divides the position
@@ -158,7 +158,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @return  {boolean}  true if within bottom row, otherwise false
      */
-    'public isAtBottom': function( pos )
+    isAtBottom( pos )
     {
         // this "works" because tile positions are vertically indexed
         return this.isAtTop( pos + 1 );
@@ -173,7 +173,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @return  {boolean}  true if within leftmost column, otherwise false
      */
-    'public isAtLeft': function( pos )
+    isAtLeft( pos )
     {
         // check if index is within the left-most column
         return ( pos <= this._mh );
@@ -188,7 +188,7 @@ module.exports = Class( 'LevelBounds',
      *
      * @return  {boolean}  true if within rightmost column, otherwise false
      */
-    'public isAtRight': function( pos )
+    isAtRight( pos )
     {
         // check if index is within the right-most column
         return ( pos >= ( this._mh * ( this._mw - 1 ) ) );
diff --git a/src/level/LevelRender.js b/src/level/LevelRender.js
index 62b66f6..2f6efdf 100644
--- a/src/level/LevelRender.js
+++ b/src/level/LevelRender.js
@@ -30,38 +30,38 @@ module.exports = Class( 'LevelRender',
      * Property to hold lock bit on canvas element
      * @type {string}
      */
-    'private const _LOCK': '__$$LevelRenderLock$$',
+    'const _LOCK': '__$$LevelRenderLock$$',
 
     /**
      * Animation interval in milliseconds
      * @type {number}
      */
-    'private const _ANIM_INTERVAL': 200,
+    'const _ANIM_INTERVAL': 200,
 
 
     /**
      * 2d context to which level should be drawn
      * @type {CanvasRenderingContext2d}
      */
-    'private _ctx': null,
+    _ctx: null,
 
     /**
      * 2d context to which masked game objects should be drawn
      * @type {CanvasRenderingContext2d}
      */
-    'private _ctxObj': null,
+    _ctxObj: null,
 
     /**
      * Tile set to be rendered
      * @type {Object}
      */
-    'private _tiles': {},
+    _tiles: {},
 
     /**
      * Animation timer
      * @type {number}
      */
-    'private _animTimer': 0,
+    _animTimer: 0,
 
 
     /**
@@ -73,7 +73,7 @@ module.exports = Class( 'LevelRender',
      * @param  {CanvasRenderingContext2d}  ctx    canvas 2d context
      * @param  {Object}                    tiles  tile set to render
      */
-    __construct: function( ctx, tiles )
+    __construct( ctx, tiles )
     {
         this._ctx   = ctx;
         this._tiles = tiles;
@@ -97,7 +97,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {undefined}
      */
-    'private _lockCanvas': function()
+    _lockCanvas()
     {
         const o = this._ctx,
               l = this.__self.$( '_LOCK' );
@@ -127,7 +127,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {LevelRender}  self
      */
-    'public freeCanvas': function()
+    freeCanvas()
     {
         const c = this._ctxObj.canvas;
 
@@ -148,7 +148,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {CanvasRenderingContext2d}  2d context for new canvas element
      */
-    'private _getObjCanvas': function()
+    _getObjCanvas()
     {
         const canvas     = this._ctx.canvas,
               document   = this._getDocument( canvas ),
@@ -179,7 +179,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {HTMLDocument}  document node
      */
-    'private _getDocument': function( element )
+    _getDocument( element )
     {
         return ( element.parentElement === null )
             ? element.parentNode
@@ -194,7 +194,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {LevelRender}  self
      */
-    'public render': function( level, level_state )
+    render( level, level_state )
     {
         if ( !( Class.isA( LevelState, level_state ) ) )
         {
@@ -272,7 +272,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {Array.<number>}  x and y coordinates of tile position
      */
-    'private _getTileVector': function( pos, sizex, sizey, w, h )
+    _getTileVector( pos, sizex, sizey, w, h )
     {
         return [
             ( Math.floor( pos / sizex ) * w ), // x
@@ -298,7 +298,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {undefined}
      */
-    'private _clearCanvases': function()
+    _clearCanvases()
     {
         const ctx = this._ctxObj,
               c   = ctx.canvas;
@@ -316,7 +316,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {boolean}  true if multiple frames, otherwise false
      */
-    'private _canAnimate': function( tid )
+    _canAnimate( tid )
     {
         const tdata = this._tiles[ tid ];
         return ( tdata.next !== tdata );
@@ -337,7 +337,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {undefined}
      */
-    'private _drawTile': function( tile, x, y )
+    _drawTile( tile, x, y )
     {
         const ctx  = ( tile.masked ) ? this._ctxObj : this._ctx;
 
@@ -350,7 +350,7 @@ module.exports = Class( 'LevelRender',
     },
 
 
-    'private _clearTile': function( ref, x, y )
+    _clearTile( ref, x, y )
     {
         this._ctxObj.clearRect( x, y, ref.data.width, ref.data.height );
     },
@@ -369,7 +369,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {undefined}
      */
-    'private _renderTunnel': function( x, y, color )
+    _renderTunnel( x, y, color )
     {
         const tdata = this._tiles.tunnel.data;
 
@@ -393,7 +393,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {number}  animation timer id
      */
-    'private _beginAnimation': function( anim )
+    _beginAnimation( anim )
     {
         const _self = this;
 
@@ -424,7 +424,7 @@ module.exports = Class( 'LevelRender',
      *
      * @return  {undefined}
      */
-    'private _clearAnimation': function()
+    _clearAnimation()
     {
         this._animTimer = +clearInterval( this._animTimer );
     }
diff --git a/src/level/LevelSet.js b/src/level/LevelSet.js
index 3967b88..c409233 100644
--- a/src/level/LevelSet.js
+++ b/src/level/LevelSet.js
@@ -36,19 +36,19 @@ module.exports = Class( 'LevelSet',
      * Raw level set data (binary)
      * @type {string}
      */
-    'private _data': '',
+    _data: '',
 
     /**
      * Constructor used to create new level instances
      * @type {Function}
      */
-    'private _levelCtor': null,
+    _levelCtor: null,
 
     /**
      * Number of levels in the given LVL data
      * @type {number}
      */
-    'private _levelCount': 0,
+    _levelCount: 0,
 
 
     /**
@@ -59,7 +59,7 @@ module.exports = Class( 'LevelSet',
      * @param  {string}  data      binary LVL data
      * @param  {Level}   level_ctor  Level constructor
      */
-    __construct: function( data, level_ctor )
+    __construct( data, level_ctor )
     {
         this._data    = ''+( data );
         this._levelCtor = level_ctor;
@@ -82,7 +82,7 @@ module.exports = Class( 'LevelSet',
      *
      * @return  {undefined}
      */
-    'private _levelDataCheck': function()
+    _levelDataCheck()
     {
         const n = ( this._data.length / this._levelCtor.getLevelSize() );
 
@@ -103,7 +103,7 @@ module.exports = Class( 'LevelSet',
      *
      * @param  {number}  id  number of level to load, 1-indexed
      */
-    'public getLevelByNumber': function( id )
+    getLevelByNumber( id )
     {
         return this._levelCtor( this._data, id );
     },
@@ -114,7 +114,7 @@ module.exports = Class( 'LevelSet',
      *
      * @return  {number}  number of levels
      */
-    'public getLevelCount': function()
+    getLevelCount()
     {
         return this._levelCount;
     },
diff --git a/src/level/LevelState.js b/src/level/LevelState.js
index 3216254..fc0a4d5 100644
--- a/src/level/LevelState.js
+++ b/src/level/LevelState.js
@@ -32,31 +32,31 @@ module.exports = Class( 'LevelState',
      * Game object factory
      * @type {GameObjectFactory}
      */
-    'private _objFactory': null,
+    _objFactory: null,
 
     /**
      * Player game object tile position
      * @type {number}
      */
-    'private _playerPos': 0,
+    _playerPos: 0,
 
     /**
      * Reference to player object
      * @type {GameObject}
      */
-    'private _player': null,
+    _player: null,
 
     /**
      * Game objects representing every object on the level
      * @type {GameObject}
      */
-    'private _objs': [],
+    _objs: [],
 
     /**
      * Continuations to invoke when object state changes
      * @type {Array.<function(GameObject,number)>}
      */
-    'private _stateCallbacks': [],
+    _stateCallbacks: [],
 
 
     /**
@@ -70,7 +70,7 @@ module.exports = Class( 'LevelState',
      * @param  {Level}                level          game level
      * @param  {GameObjectFactory}  obj_factory  game object factory
      */
-    __construct: function( level, obj_factory )
+    __construct( level, obj_factory )
     {
         if ( !( Class.isA( GameObjectFactory, obj_factory ) ) )
         {
@@ -92,7 +92,7 @@ module.exports = Class( 'LevelState',
      * performant (especially since the level size could be arbitrarily
      * large).
      */
-    'public flush': function()
+    flush()
     {
         const _self = this;
 
@@ -122,7 +122,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {LevelState}  self
      */
-    'public onChange': function( callback )
+    onChange( callback )
     {
         this._stateCallbacks.push( callback );
         return this;
@@ -143,7 +143,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {undefined}
      */
-    'private _emitChange': function( obj, pos )
+    _emitChange( obj, pos )
     {
         const l = this._stateCallbacks.length;
         let   i = -1;
@@ -178,7 +178,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {undefined}
      */
-    'private _initObjects': function( objs, objlevel )
+    _initObjects( objs, objlevel )
     {
         let i = objs.length;
 
@@ -214,7 +214,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {GameObject}  new game object
      */
-    'private _createObj': function( tid, from )
+    _createObj( tid, from )
     {
         const obj = this._objFactory.createObject( tid );
 
@@ -239,7 +239,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {undefined}
      */
-    'private _forEachObj': function( c )
+    _forEachObj( c )
     {
         this._objs.forEach( function( objs, pos )
         {
@@ -265,7 +265,7 @@ module.exports = Class( 'LevelState',
      * @throws  {Error}      if an invalid tile position
      * @throws  {TypeError}  if an invalid replacement game object
      */
-    'private _addObj': function( obj, pos )
+    _addObj( obj, pos )
     {
         // replace no object with the given object (that is, replace nothing
         // with something---add)
@@ -303,7 +303,7 @@ module.exports = Class( 'LevelState',
      * @throws  {Error}      if an invalid tile position
      * @throws  {TypeError}  if an invalid replacement game object
      */
-    'private _replaceObj': function( cur, newobj, pos )
+    _replaceObj( cur, newobj, pos )
     {
         const o = this._objs[ pos ];
 
@@ -361,7 +361,7 @@ module.exports = Class( 'LevelState',
      *
      * @throws  {Error}  if an invalid tile position
      */
-    'private _removeObj': function( obj, pos )
+    _removeObj( obj, pos )
     {
         this._replaceObj( obj, null, pos );
     },
@@ -385,7 +385,7 @@ module.exports = Class( 'LevelState',
      * @throws  {TypeError}  if an invalid game object
      * @throws  {Error}      if an invalid tile position
      */
-    'private _moveObj': function( obj, from, to )
+    _moveObj( obj, from, to )
     {
         this._removeObj( obj, from );
         this._addObj( obj, to );
@@ -402,7 +402,7 @@ module.exports = Class( 'LevelState',
      * @param  {GameObject}  obj  game object representing the player
      * @param  {number}      pos  player tile position
      */
-    'private _initPlayer': function( obj, pos )
+    _initPlayer( obj, pos )
     {
         this._player    = obj;
         this._playerPos = pos;
@@ -428,7 +428,7 @@ module.exports = Class( 'LevelState',
      * @throws  {TypeError}  if state results in an invalid game object
      * @throws  {Error}      if an invalid tile position
      */
-    'private _changeState': function( cur, state, pos )
+    _changeState( cur, state, pos )
     {
         // if the state has not changed, then do nothing
         if ( state === cur.getTid() )
@@ -461,7 +461,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {function(string)}  callback to perform state change
      */
-    'private _createStateCallback': function( cur, pos, c )
+    _createStateCallback( cur, pos, c )
     {
         const _self = this;
 
@@ -494,7 +494,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {function(string)}  callback to perform state change
      */
-    'private _createMoveCallback': function( obj, pos, c )
+    _createMoveCallback( obj, pos, c )
     {
         const _self = this;
 
@@ -524,7 +524,7 @@ module.exports = Class( 'LevelState',
      *
      * @return  {undefined}
      */
-    'public movePlayer': function( direction, bounds )
+    movePlayer( direction, bounds )
     {
         const _self  = this,
               player = this._player;
diff --git a/src/ui/MenuBar.js b/src/ui/MenuBar.js
index dd44473..d335930 100644
--- a/src/ui/MenuBar.js
+++ b/src/ui/MenuBar.js
@@ -32,7 +32,7 @@ module.exports = Class( 'MenuBar',
      * DOM element representing the menu bar
      * @type {Element}
      */
-    'private _bar': null,
+    _bar: null,
 
 
     /**
@@ -44,7 +44,7 @@ module.exports = Class( 'MenuBar',
      *
      * @param  {Element}  element  DOM element representing menu bar
      */
-    __construct: function( element )
+    __construct( element )
     {
         // we'll need an id set for this element
         if ( !element.id )
@@ -66,7 +66,7 @@ module.exports = Class( 'MenuBar',
      *
      * @return  {undefined}
      */
-    'private _initMenuActivation': function()
+    _initMenuActivation()
     {
         const id    = this._bar.id,
               menus = this._bar.parentNode.querySelectorAll( '#'+id+' > li > a' ),
@@ -100,7 +100,7 @@ module.exports = Class( 'MenuBar',
      *
      * @return  {undefined}
      */
-    'private _hookMenuMouseOut': function()
+    _hookMenuMouseOut()
     {
         const _self = this,
               bar   = this._bar;
@@ -126,7 +126,7 @@ module.exports = Class( 'MenuBar',
      *
      * @return  {boolean}  TRUE if child or node itself, otherwise FALSE
      */
-    'private _isNodeOrChildOf': function( parent, node )
+    _isNodeOrChildOf( parent, node )
     {
         if ( !node || !node.parentNode ) return false;