Downloaded this new game this morning... it is a HELL of a lot of fun! It's the bastard son of Geometry Wars and those old 1980s shoot-'em-up games like Time Pilot. Move with one stick, fire with the other, you have multiple upgradeable weapons (machine gun, cannon, flamethrower, missiles), there are occasional bosses which are pretty challenging. The graphics are amazingly good, considering the entire game is less than 50 MB in size. The full game costs 800 Microsoft points, but the trial version is (as always) free. And, as a shout out to the past, the game was developed by Sierra... that's right, the King's Quest/Leisure Suit Larry folks. Highly recommended!