Valve has revealed that its co-op zombie survival FPS Left 4 Dead 2 will be available for Macs from Tuesday October 5 (that's tomorrow!).
The game will be released as part of the Steam Play initiative, which means if you currently own the game on the PC you can download it for free on the Mac.
Valve has apologised to owners of the original Left 4 Dead, but said it is working hard to get it out in time for Halloween.
Valve has revealed that Left 4 Dead was originally conceived as an RPG featuring fairies.