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I thought HL1 used quake 2 engine (or a modification of it), no?

• pekk 13y ago
  Pretty sure they started from Quake 1 and did a lot of work from there
  • ekianjo 13y ago
    Correct, it's a heavily modified Quake 1 engine.
  • darkhorn 13y ago
    How did they get the Quake 2 engine? Isn't it commercial closed source? Did Valve paid? Were there other games based on this engine?
    • Narishma 13y ago
      It's Quake 1, not 2. And yes, Valve among others licensed it, just like people do today with Unreal Engine or Cry Engine.