Gotham City Impostors beta sign-up now live

When Commissioner Gordon throws up the Bat signal, he's seeking a meeting with the Caped Crusader. Warner Bros. is issuing its own Batman sign today, seeking gamers to sign up for the upcoming closed beta for Gotham City Impostors.

Gamers can now leave their information at the closed beta sign-up page and hope they are chosen for the trial period, which will start in September. It is unclear which platforms the beta will land on; however, the Xbox 360, PlayStation 3, and PC platforms are mentioned on the beta page.

Developed by Seattle-based F.E.A.R. creator Monolith, Gotham City Impostors is "Batman with guns," according to its developer. However, as fans know, Batman doesn't usually wield guns. Thus, Impostors casts players as citizens of Gotham City who are inspired by either Batman or The Joker.

For more on Gotham City Impostors--due out in full in 2012--check out GameSpot's latest hands-on preview of the game.