"Shank" & "Scott Pilgrim vs the world" hit Xbox 360 Arcade and I must say they are both Epic!! If you grew up in the era of 8 bit goodness and arcades Scott Pilgrim is a awesome walk back through time with a 4 player co-op game!!
And on the other hand you have "Shank" 2D cartoonie shoot'em up that feels like your playing through a Robert Rodriguez film! Uber gory and fun!! Theres a gritty back drop but not to deep story line with this one, the game play will keep you glued.