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.

QoelQast says

10/10 - Agree (11) Disagree (1)

This game is AWESOME. Superb graphics (even after 6(?) years.. The fact that it's able to run on nearly every computer and it's a heavily editable to make all kind of mods make this game a real KILLER!
This game contains great single-player campaign with a great variety of guns and monsters. GREAT atmosphere.. : 'Very creepy' environments (Ravenholm), 'Dead, sci-fi' places, oh, I like that.
Also contains a multi-player, it's fun, but I prefer playing the single-player. I like the multiplayer, but it's like a rush for the legendary COLT or BAZOOKA's which are imho overpowered. Ohh, I forgot to mention that you can use the gravity gun in multiplayer, which is so COOL!

Valve, thanks for this great game!