You can play single player, but it isn't nearly as fun as multiplayer. The nice thing is that you can jump in really at any time with multiplayer. You can pick it up and play some single player and always check out the multiplayer later. I bought the import to see how it turned out and then sold it when I finished. I can't wait for the domestic US release. It would be so close if it wasn't for the delay. I'll probably do the same with Donkey Konga.