Online services for select Call of Duty titles on certain platforms and all Guitar Hero games have been "disrupted" due to a loss of power at an Activision data center in New York City; one of many such centers that have been crippled by Hurricane Sandy.

According to a One of Swords blog post from Activision spokesman Dan Amrich, servers for the following games took a hit, and "until the power is stabilized," won't be fully functional again:

• Call of Duty: World at War (all platforms)
• Call of Duty: Modern Warfare 2 (PS3)
• Call of Duty: Black Ops (PS3, PC, Wii)
• Guitar Hero (all titles and platforms)

Amrich added that Activision is "working on restoring full functionality as soon as possible," but that he wasn't sure when that would be. We'll update you when Activision gets things up and running again.