Activision Publishing announces that Singularity is now available in North American stores for Windows, Xbox 360, and PlayStation 3, offering Raven's sci-fi first-person shooter where time is one of the weapons. Here's word on the game:

Thrust onto the mysterious Russian island base of Katorga-12, filled with Cold War secrets that threaten time itself, players must fight their way through an ever-shifting environment, haunted by time-ravaged creatures and mysteries. Armed with an arsenal of high-powered weapons and the Time Manipulation Device, players must contend with sudden time waves that hurl them back and forth between 1955 and the present day. In addition to a story-driven narrative, SINGULARITY offers players a unique multi-player experience, where Russian Special Forces with individual powers take on a team of creatures from another time including the powerful Radion, the gravity-defying Phase Tick and the time-altering Zek.