valve software

An American video game developer.

For the device, see valve.

Products developed

Games

• Half-Life
• Portal
• Counter-Strike
• Day of Defeat
• Team Fortress 2
• Team Fortress Classic
• Left 4 Dead
• DOTA 2
• Deadlock

Other products

• Steam
• The Orange Box
• Source Filmmaker
• Steam Deck

See also

• Garry's Mod