|Only played this very briefly, hopping into the middle of a single-player campaign. It's a 3rd-person shooter where you run around shooting at these semi-zombie "infected" people who keep pelting you with yellow goo. Once you shoot 'em up for a while, their target indicator turns red, meaning it's time to spray them with your disinfectant, and then they fizzle out of view.|
I spent about ten minutes doing that, and felt no particular urge to keep playing. I guess there's a wireless multiplayer deathmatch mode or something, too, but I doubt I'll ever be playing it.