With Gears of War 3, Epic Games has revisited its popular Horde Mode. Rather than simply provide more of the same, the studio has added elements of tower defense and strategy to the mix. It's a cool change of pace, and we had a lot of fun with it at E3. If you weren't able to check it out there, a new trailer hosted by Anya Stroud's familiar voice walks greenhorns through the mode.

In the mode, players earn currency that they can spend on fortifying their defenses. These defenses range from simple barriers to slow down attackers to automated sentries, mountable turrets, and the enormous Silverback mech suit. Check out the video below to see these and more in action, and to get a look at how these defenses can be further upgraded.