Even with its new multiplayer mode, single-player campaign, and game-changing features (e.g. customizable drone), Geometry Wars: Galaxies
is a hard sell for the people comparing the DS's $30 update to the original $5 download on XBLA.
Meijer's $19.99 online sale for Galaxies
is still a lot more expensive than five bucks, but when you consider all the extra content Kuju Entertainment threw in, that price doesn't sound bad at all. Besides, the DS version has a huge advantage over the old and crusty XBLA release that you shouldn't forget: portability!