Pick up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted, its populace dwindling. Freeman is thrust into the unenviable role of rescuing the world from the wrong he unleashed back at Black Mesa. And a lot of people, people he cares about, are counting on him.
Incredible design forcing the gameplay in a perfect way by giving the player incredible variety of ways to build and attack base's.
This is first beta version.
try it, I'm expecting feedback for improving the next version.