Aspyr has let Mac gamers know it plans to release first person shoot-em-up game Prey in January 2007.

Prey is described as a "groundbreaking first-person shooter that turns the genre upside-down with new gameplay features and next-generation graphics."

Among other small tweaks to the established game genre format, Prey introduces new gameplay elements such as wall-walking, portals, spirit-walking and gravity flipping. In multi-player mode, it permits eight players to fight together at once.

The game tells the story of Tommy, a Cherokee garage mechanic stuck on a reservation and going nowhere. His life changes when he and his people are abducted by aliens, forcing him to use his Cherokee spiritual powers.

Aspyr has published a webpage where further details of the game will be announced.