develop a multi-movable-object (at least three distinct types of movable objects, for a counterexample, the traditional Pong game does not qualify since it has only two distinct types of movable objects - ball and paddle - no matter how many balls and paddles you can play with), multi-player (at least two players), keyboard/mouse-controlled, image/text/sound-enabled, scored, competitive game. It can be any kind of game but you have to be able to write an XNA program to implement it.
In your game design document, you must describe your game and explain without codes how your game would become a multi-movable-object, multi-player, keyboard/mouse-controlled, image/text/sound-enabled, scored, competitive game