Rainbow Six Siege is getting a co-op zombie event. The long-rumoured game-mode, now known to be called Mission Outbreak, will arrive in the game during the first season of year three, and be playable for one month.

Here's what we know about Rainbow Six Siege's Operation Chimera.

Mission Outbreak will be a three-player co-op event, but beyond that, details are pretty sparse. What we do know stems from an ARG that the Rainbow Six subreddit have been unpicking since it was first discovered.