Pettycon (CC0), Pixabay

Team Fortress 2 is not really a “mod” game. The closest thing to a mod I’ve heard of is “the Hidden” mod which is based on the Hidden Source mod for Half Life 2. You could try to find a server with that enabled.

  • Advanced Weaponizer 2
  • TF2Ware
  • Versus Saxton Hale
  • Prop Hunt
  • Deathmatch
  • Randomizer
  • x10 Mod