i made a simple on game controller for a game when test it with coconjs it sometimes freezes and not responding to touch specially on slow devices then it works and so on this.sprite.events.onInputDown.add(function(){ console.log("down") if (GAME.paused == false) { this.sprite.alpha = 1; this.pressed = true; }; }, this); this.sprite.events.onInputUp.add(function(){ if (GAME.paused == false) { this.sprite.alpha = 0.35; this.pressed = false; }; }, this); and they are fixed to camera