CD Projekt Red is working with the creator of one of The Witcher 3’s biggest graphics mods, with his work set to be officially included in the game’s upcoming remaster.
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.
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
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.
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
It’s funny that source engine was so bad it inspired a whole generation of better engines