Natural Selection 3.2 Full

Natural Selection has reached version 3.2, which brings cool new features as well as countless changes and tweaks.

Natural Selection blends first-person combat with real-time strategy. It features intense 'marines vs. aliens' teamplay, where one marine can become Commander. The Commander plays from a top-down perspective and leads live players. The aliens can evolve upgrades like "Cloaking" and "Scent of Fear", and can change lifeforms to run on walls, fly, and even devour marines whole.

In order to play Natural Selection you must have installed Steam and run the original Half-Life, not Half-Life 2.