There's a few deals this week for Xbox Live Gold members and among them are two co-op titles.
First up is Earthworm Jim HD, a solid co-op title, that's marked down half its normal 800 
price to 400 . The game features four player local and online co-op through a variety a specific set of levels.
Next up is Band of Bugs, a four player co-op title that allows you to comp stomp your way to victory with friends in a turn based strategy RPG either online or off. Like EWJ, the game is marked down 50% and is now 400 .
Source: Majornelson.com