At long last Black Mesa finally comes to Steam, amazing attention to detail in this Source Engine recreation of the 1998 hit FPS.

Defend your ancient, a steep but rewarding learning curve Dota 2 is a thinking and clicking man's game.

Fantastic online murder game.

Before Battlefield and Call of Duty there was Counter-Strike. A game that still holds it own even today.

Best. Multiplayer. Ever.

Class based FPS with a unique artstyle and it's steady stream of new content make TF2 great for now and years to come.

All the assets of the Source engine at your control to build and play.

Zombie slaying with you and 3 buddies, what's not to like?

A powerful 3D Animation tool condenses the workflow of an animation studio onto a simple gaming rig setup.

It's the 2004 return of Gordon Freeman, with a beautifully detailed world and believable characters, HL2 raises the bar and even influences games today.