Is Tf2 and Half Life in the same universe?

Question

Counter-Strike, Team Fortress, Day of Defeat, and Left 4 Dead are games from Valve that are not set in the Half-Life universe.

Hagrid P Hazard · Accepted Answer

Counter-Strike, Team Fortress, Day of Defeat, and Left 4 Dead are games from Valve that are not set in the Half-Life universe.