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[–] 2 points 2 months ago (2 children)

The original Team Fortress was a mod of HL1. TF2 was built on the Source engine directly by Valve, so it technically was never a mod, but it has its roots in the original mod.

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  • [–] 3 points 2 months ago*

    One layer of more complex - the original Team Fortress was quake, but there was an intermediate version (team fortress classic) developed by Valve as a mod to Half Life - then there was TF1.5, which was a standalone repack of the HL mod, then came TF2 developed on Source

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