Tonight I played BIT.TRIP BEAT. This game is like Pong on acid. You move a paddle with your mouse and bounce blocks back that come at you. As you hit the blocks you will transition into trippier dimensions with success, and if you miss a lot you will drop down into more boring ones. Miss enough, and it's game over.
This game is part of the BIT.TRIP series, so it is all about cool pixel art and chiptunes. As with other games in the series the music gets more complex the better you do. It can get pretty hard to keep track of all the blocks, but it feels pretty rewarding if you pull it off.