You'll get to have multiple versions of the Dark Knight fighting against each other later this year when the just announced Infinite Crisis comes to PCs. The MOBA title is being developed by Turbine. Here's what the press release says:
Infinite Crisis is a new entrant into the wildly popular MOBA genre that delivers a heart-pounding competitive player vs. player battle experience set in the legendary DC Multiverse - a world in which familiar DC Comics characters have been reimagined in startling ways. Featuring a wide variety of DC Comics heroes and villains, Infinite Crisis puts players in control of twisted incarnations of their favorite characters throughout the Multiverse such as Nightmare Batman and Gaslight Catwoman, playing in league with well-known characters including Green Lantern and The Flash.
Man, I hope they put the Black President Superman from last year's Action Comics #9. That guy rocked. What alt versions of DC Comics characters do you want to see?