The game’s director, Sefton Hill, told IGN that Batman: Arkham City will be a Single-player only experience.
During the interview Hill said:
“Our thought process behind this was fairly simple: when we investigated adding multiplayer we asked, ‘If we use all of the energy that is required to create multiplayer and instead focus this on the single player, would that deliver a better overall game?’”
“With the game now coming to the final stages, I can honestly say it would not have been possible to deliver Arkham City the way we wanted to if we’d have added multiplayer.
“So it might not be the fashionable choice, it might not get us an extra tick on the box, but we are convinced, and we hope that gamers will agree when they get to play the finished game, that we have made the right decision. ”
Batman: Arkham City is set to launch for PS3, Xbox 360 and PC later this year.