Defense Grid: The Awakening, already available for the PC, offers a futuristic, single-player and story-driven experience with lots and lots of levels. Yo-Ho Kablamo leans more toward multiplayer, offering four-player online matches that pit pirate ship against pirate ship. Both games are 800 Microsoft Points.
Who’s picking up what?
Yo-Ho Kablamo & Defense Grid: The Awakening [Xbox.com]