anchor.diff:    };
   
     // create tile background using one frame from a spritesheet
  -	game.add.tileSprite(0, 0, 600, 800, 'background', 8);
  +	game.add.tileSprite(0, 0, 600, 600, 'background', 8);
   
     // create instructional text
     createText();
  
positive.code: }
  
  // fullscreen function
  function gofull() {
    if (game.scale.isFullScreen){
      game.scale.stopFullScreen();
    }else{
      game.scale.startFullScreen(false);
    }
  }
  
negative.code: //= require application
  
  // create game environment
  var game = new Phaser.Game(600, 600, Phaser.AUTO, 'donut-knight', { preload: preload, create: create, update: update });
  
  // preload all assets
  function preload() {
  