Sonic the Hedgehog
has a a few pieces
of new content available on Xbox Live Marketplace. If you enjoyed the boss battles found in the game with, you might be interested in this. You can download, for 150 MS points each, "Boss Attack"s for each of the game's lead hedgehogs. Apparently, if you've completed Sonic, Shadow, or Silver's respective episode, you can use this content for what seems to be a game mode akin to Heavy Weapon
's Boss Blitz, but for individual characters. Do you play the game, and would you pick this up if you do?