The funniest mod ever made, using the Half-Life 2 physics engine to build stuff.

The best game ever, physics engine makes this game rock-solid

The best multiplayer game made ever in my opinion, with a huge selection of things to do.

Always loved Rainbow Six, can't say this game let me down.

One of the greatest games ever, without shader and dynamic lightning and all that modern stuff

Awesome action with physics engine and stunning performance.

Seaquel to Half-Life 2, making the experience even greater.

One of the greatest sci-fi games ever made.

Great action in a stunning enviroment.

Predator games always made a load of fun, so does this.