I bought the DS version of the game, and well on the back it says 2-4 players. Does that mean you can't play it single player? I don't want to open it to find out because then I can't return it. So has anyone opened a DS version yet? I checked every video game website I can think of and can't find any answers. Maybe their were reviews or something I missed? Because this whole time Ihad assumed you could play it 1 player. Thanks.