[JsLoveR]

сделал при помощи метода call:

function Game() {
		this.canvas = true;
	};
	
	Game.prototype = {
		canvas : null,
	};
	
	function Player() {
		Game.call(this); 
		this.object = this.canvas;
	};
	
	Player.prototype = {
		object : null,
	};

	var player = new Player();
	alert(player.object);