The ESRB have rated Batman: Gotham City Imposters for PS3, Xbox 360 and PC.
You should really take a minute to read the full classification breakdown below. It’s a very interesting, funny and random read. If holding down farts, peeing on things and watching a baby vomit onto a refrigerator are your ideas of a good thing, then Gotham City Imposters is the game for you. Here’s the full rating summary:
“This is a first-person shooter in which players assume the role of would-be vigilantes and criminals that fight for control over a stylized Gotham City. Players use assault rifles, shotguns, rocket launchers, and assorted gadgets (e.g., ninja smoke bombs, grappling guns) to attack enemies in team-based combat. These over-the-top battles are often accompanied by gunfire, large explosions, and cries of pain; brief blood-splatter effects can occur as enemies are shot or injured. Characters can also be temporarily impaled with arrows, or frozen and shattered to pieces as a result of an ice gun. Some female characters are depicted in form-fitting outfits and lingerie that reveal moderate amounts of cleavage; a “sensual” voice option is also available in the customization menu (e.g., “I hope you bats like it rough.”). The game includes character profile phrases such as “Cuts the cheese,” “Holding down the fart,” and “I peed on it. It’s mine”; and one comical sequence depicts a baby vomiting onto a refrigerator. The dialogue includes language censored by audible bleeps (e.g., “Listen to me, you mother-[bleep] clowns!” and “Yep! [bleep] for brains!”); one cutscene depicts a character sticking up his middle finger (partially obscured). Unedited words such as “a*s” and ‘damn’ can also be heard in dialogue.”