Phaser.js game demo

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/phaser/2.0.6/phaser.min.js"></script>

JavaScript

var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-demo', {
  preload: preload,
  create: create,
  update: update,
  render: render
});

var player;
var starfield;
var cursors;
var fireButton;
var gameOver;
var upLedge;
var vaRandomUpLedgeSize;
var bottomLedge;



function preload() {
  game.load.image('starfield', 'data:image/png;base64,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');
 ...