Remember when the Game Boy first came out, and they all came with a copy of Tetris? Well, the PSP should have come with a copy of Lumines ($40). This incredibly addicting puzzle game features 24 levels, all with their own signature colors and music, plus wireless multiplayer. If you have a PSP and don’t have Lumines, get it. If you don’t have a PSP, hurry up and get one — and make this the first game you get for it.