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.
This is a special HL2 Mod which makes your game smother and it looks mor sci-fi and blue. Also there are new weapons. And the gravity-gun is built in...
I think you meant to put mod on sourcemods instead of hl2\custom