Half-Life: Opposing Force
aka:
Half-Life: Opposing Force - Força Oponente,
Hλlf-Life: Opposing Force,
OF
Moby ID: 1157
The following companies have been credited with this game. This does not necessarily imply they are the owner(s) of the IP.
Publisher History- Sierra On-Line, Inc. (Windows)
- Valve Corporation (Linux, Macintosh, Windows)
- Gearbox Software LLC (Linux, Macintosh, Windows)