Half Life 2
Half-Life 2: DM Overwatch Map (Final)
dm_overwatch_final This is the following version of dm_overwatch_v3, so the final one. The teleports are no longer invisible, just search for the black smoke. (4 hidden rooms + 3 teleports) PATH C:Program FilesValveSteamSteamApps
This is quite a large map by Mario H that's based in the war torn streets of City 17.