CheatCC says - It seems that cover-based combat systems are becoming the norm for third-person shooters these days. Inversion is a game that takes this idea and flips it on its head—literally. This shooter is all about messing with the idea of gravity, and you'll often see people walking upside-down on ceilings. I gave Inversion some play time at E3 this year, testing out both single-player and multiplayer modes. So is this gravity gimmick enough to make Inversion stand out among the pack? Let's find out.