It's war on the streets (and the docks and in the amusement park... okay, everywhere) between the Bats and Jokerz!
Gotham City Impostors is a multiplayer first-person shooter (FPS) based loosely on the rivalry between Batman and the Joker. Instead of playing as super-powered heroes and villains though, you're more like the member of a wannabe super-gang. Armed with an assortment of wacky weapons and hastily-made costumes, you take to the streets in all-out war against the rival gang.
