Enemy Territory: Quake Wars

The Strogg have similar classes, but little else is the same. Animations for the two sides are completely different, and you'll be able to tell what weapons friends and foes are holding just by how their character moves. And, of course, the Strogg are fueled by Stroyent, a sort of Red Bull made from humans - and it powers both their weaponry and their health systems. If you've only got a little left, do you funnel it into your own survival or make it power the one final shot that could win the battle? You choose.