Rocket Riot. When thinking about the way that retro titles should go we definitely prefer this style to that of Mega Man 9. Over at xblarcade there's an interview with the developers that gives some history of the project, as well as what to expect from it. As another twin stick shooter for XBLA, Rocket Riot does its best to differentiate itself with its destructible (and good looking) environments. Also mentioned in the interivew are the origin of the game's name as well as some details out XNA 2.0 (the game was made with it).