Half-Life® 2

Half-Life 2 defines a new benchmark in gaming with startling realism and responsiveness. Powered by Source™ technology, Half-Life 2 features the most sophisticated in-game characters ever witnessed, advanced AI, stunning graphics and physical gameplay.

Get Half-Life 2 now!

Counter-Strike™: Source™

Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology. Featuring state of the art graphics, all new sounds, and introducing physics, Counter-Strike: Source is a must-have for every action gamer.

Get Counter-Strike:Source now!

Half-Life: Source

Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.

Get Half-Life:Source now!

Half-Life 2: Deathmatch

Fast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!

Get HL2:Deathmatch now!

Day of Defeat™: Source

Day of Defeat offers an intense brand of online gameplay set in the WWII European Theatre of Operations. Players assume the role of light/assault/heavy infantry, sniper or machine-gunner class, and missions are based on historical operations. Day of Defeat: Source features enhanced graphics and sounds design to leverage the power of Source, Valve's new engine technology.

Get Day of Defeat:Source now!

Valve's "Back Catalog"

  • Half-Life
  • Counter-Strike
  • Counter-Strike: Condition Zero
  • Counter-Strike: Deleted Scenes
  • Day of Defeat
  • Team Fortress Classic
  • Deathmatch Classic
  • Opposing Force
  • Ricochet
Get Valve's Back Catalog now!

Steam™

Using Steam, you'll be able to play all of Valve's games on the Internet with other players. You'll also be able to:
  • Get fast access to future Valve releases
  • Receieve game updates automatically
  • Instant-message your friends, even while you play
  • Find the best game servers, and find your friends' games
  • Receive Steam-only special offers
Get Steam Now!

Official CyberCafé Program

If you run a cybercafe or other gaming venue, Valve makes it easy for you to bring our games to your customers. There are currently over 1600 gaming venues in our program, and more are signing up every day. Valve's cybercaf program is the only legal way to use Valve games in your cybercaf or gaming center.

More info

Technology licensing

The Valve Source™ engine technology, the same used to power Half-Life 2, is now available for license by third party developers. Source provides major enhancements in several key areas including character animation, advanced AI, real-world physics, and shader-based rendering.

Visit The Valve Developer Community
Source Engine info (.pdf)