If you need a reason to go blind, this is the best you're going to get.
Put that to the best of electronica, dub, and dance music.
Insert a whole bunch of crazy layouts based around two colors.
Bam!
You've got yourself Lumines, the puzzle game that has everyone talking, (or not talking, depending on if you're playing or not.)
The game is seriously the simplest puzzle game ever. You have squares that are made up four blocks, which are two different colors. You drop them on top of eachother, in attempt to make 2x2 squares of the same color, all before the column of light passes over it. And in one sweep of that light, you have to match up as many squares as you can to get the best possible combo score.
The music is quite astounding. All of it super-catchy, and it all responds to what you do in the game. Small instruments sound when you move your blocks, and big hits blast out when you pull off a huge combo.
The game offers 4 modes. "Challenge", which is all the puzzles back to back, with no intermission except the pause button. If you want to lose feeling in your thumbs, that's what you play. Then there's "Single Skin" mode, where you play one song as much as you want until you lose, (or quit). The there's the time trial mode, which is self-explanatory. And finally Multiplayer.
While you play, each song has it's own awe-inspiring backdrop. Sort of like a controlled acid-trip, the graphics amaze you as you become trace-fixed into the puzzle.
The game has all the elements of the games it tries to be, and nothing it doesn't need. It's a bare-bones, addictive, tear-jerking (depending on how long you play) game. And if you have a PSP and don't have this game, I seriously question why you even bought the $300 machine.