This week brought a slew of Xbox Live releases, but very few worthwhile ones. The sequel to one of the best XBLA games, Geometry Wars, made its debut as the headliner and plays very well. Other pieces of content include Soulcalibur IV music and themes in celebration of release and two demos for as-yet-unreleased games. Hop online and download away! But before you do, read IGN's guide.