I wish it was cross platform, I was playing on the PC using my 360 pad last night, I actually never even tried the game with M&K. I've been completely corrupted.

Mag,

This question almost answered my question...

"Magnum: Will either version allow join the game in-progress for the co-op campaign?

Tim: We don't support join in progress. However should a player drop out in the middle of the game rather than you being 1 man down the AI will take over that position."

Just to be sure, Is the single play campaign playable with multi-player co-op, like in Rainbow 6 Vegas 2?

Thanks!

EDIT: Same question with ArmA2. Thanks!

EDIT2: Both games support co-op multiplayer in the campaign.