Microsoft has detailed the content coming for the next couple of weeks on the Xbox Live Marketplace.
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This week's Xbox Live Arcade titles include Backbreaker Vengeance ($15 / 1200 MSP), Half-Minute Hero Super Mega Neo Climax ($10 / 800 MSP), and Galaga Legions DX ($10). Next week will bring a bounty of Deadliest Warrior: Legends ($10).
If discounts are more your flavor, next week will bring sales on Torchlight ($10), Stacking ($7.50), the Dante's Inferno Dark Forest pack ($2.50), the Medal of Honor Hot Zone pack ($5), and the Red Hot Chili Pepper album Blood Sugar Sex Magik for Rock Band ($7.50). You can also get 50% off Hasbro Family Game Night this week.
Games On Demand will add BlazBlue: Continuum Shift and Bionic Commando this week, followed by Risen next week.
As for content for existing games, Pinball FX 2 is getting a Captain America table this week, and Mortal Kombat is adding Kenshi next week, as previously announced.
Finally, the Marketplace will update with Avatar items for Harry Potter, Deadliest Warrior, and a "Military Special Ops update."