I am trying to fix the speed and framerate for Link if someone have any idea for doing computations, speed = function(framerate) for example Here is the code : http://codepen.io/featuresmega/pen/ALKLEj var game; var map; var layer, layer1, layer2; var player; var cursors; game = new Phaser.Game(800, 600, Phaser.CANVAS, 'Zelda Mysteries of PhaserIO', { preload: preload, create: create, update: update, render: render }); function preload() { game.load.tilemap('zelda', 'http://cross