Descent will conclude the top-down shooter trilogy with new weapons and enemies plus the opportunity to step outside the ship in what're called "breathtaking hull walk set pieces." You'll get to shoot lots of things, of course.

Alien Breed 3 will be released for PC, exclusively via Steam, and Xbox 360 on November 17, costing $9.99 (800 Microsoft Points). A PlayStation 3 edition will follow later.