Originally posted by: BlueWeasel
I don't have a 360, but am currently addicted to Grid Wars 2 (the PC clone of Geometry Wars). It's a little easier and the graphics aren't as nice as Geometry Wars, but the gameplay is excellent.
It's a good way to see if you'd like Geometry Wars....personally, Geometry Wars would be the first thing I bought if I got a 360. As blurred said, it's one of the best $5 games you'll ever buy.