The third installment of Aperture Laboratories game futures investment pitch is upon us, and this time the company encourages us to consider the consumer version of its military-grade turret line.

Platforms, robots, and now turrets. What does Valve have up its sleeve for the fourth and final installment? We'll find out next week. For now, turrets:



Portal 2 is being developed for the PlayStation 3, Xbox 360, Windows PCs, and Mac OS. The game is set for launch on April 19.


Sharkey says: Ha! This series of videos has been great, but this one is my favorite so far. My money is on Portal Guns for the finale. Portal 2 in two weeks!