If you were only able to play one game from now and for the rest of your life, which game would you pick?

I'm picturing some sort of doomsday scenario where you're on a desert island that happens to be well stocked with food and refreshments, but only a single gaming machine and game. There's no hope of rescue because the island exists between dimensions, so this game is going to have to last a long, long time. Which game do you hope is on there?