Team Fortress 2

Team Fortress 2 is currently available on Steam. Launch it now* or buy it from Steam (via browser or Steam client).
*Only works if Steam has been installed, please install Steam if you haven't already.
Steam Deck support status:

Unknown - More info on ProtonDB

Team Fortress 2 (2007) is the follow-up to both Team Fortress Classic and the original Quake mod, Team Fortress.

Unlike other "class-based" games that offer a variety of combat classes only, Team Fortress 2 packs a wild variety of classes which provide a broad range of tactical abilities and personalities, and lend themselves to a variety of player skills.

Play as the flame-throwing Pyro, the room clearing Heavy, or the Spy, a master of disguises. Other classes include: Scout, Sniper, Medic, Engineer, Demoman, or Soldier.