Eurogamer reports Ubisoft will move its game servers next week. The action means Ubisoft's always-online DRM-protected games will not be playable during the downtime, and that online modes will be impacted as well. It's unknown how long the work will last.
PC and Mac gamers will find several games completely unavailable online and offline.
Ubisoft will start transitioning its online services from next Tuesday, 7th February.
PC games scheduled to go dark include Tom Clancy's HAWX 2, Might & Magic: Heroes 6 and The Settlers 7.
Mac gamers will lose access to Assassin's Creed, Splinter Cell Conviction and The Settlers.
Uplay on PC will fall offline completely, although other PC games not mentioned above will remain playable offline if already connected at least once.