Anyone try the demo yet? Kinda weary about dropping $10 on yet another multiplayer Tetris, since I have Tetris DS. But it does support 6 players over Live. "Splash" is because it's also a virtual aquarium, with some additional fish unlocked through achievements or the marketplace. 32 types with 14 active fish. It has a screensaver mode so you can have the main menu hidden and just have the virtual aquarium running on your display.