The Valve Logo

Valve is a game developing company that makes games like Portal, Half Life, and Left 4 Dead.


  • None of Valve's series has had more than 2 games.
    • The only exception is Half Life, which is in development for a third game.
  • Portal and Dota 2 are Valve's only non-Mature rated games.
    • Dota, however, is not completely made by Valve, like Counter Strike and Day of Defeat.

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