Geometry Wars: Galaxies review at Gamespot.

"Geometry Wars just keeps getting bigger and bigger. Originally released as a hidden minigame in developer Bizarre Creations' Xbox racer Project Gotham Racing 2, the brightly-colored dual-stick shooter eventually evolved into its own entity as a $5 download on the Xbox Live Arcade. Now the game has come to the DS and Wii in Geometry Wars: Galaxies. One might be wondering how a $5 game translates into a worthwhile value on these platforms for $30 and $40, respectively. The answer is depth. Galaxies overhauls the Geometry Wars experience into a structured series of unique levels that continually ramp up in challenge as you go. There are unlockables to acquire, multiplayer modes to check out, and on top of it all, the XBLA version of Geometry Wars: Retro Evolved is included as well. There's a surprising amount of stuff to do here, and while it all basically translates to shooting lots of geometric shapes over and over again, the gameplay is so consistently intense and crazy that you're bound to get sucked in."

Full Source: Gamespot