Half-life: Opposing Force is still an amazing game, although its not nearly as amazing as it was when it was released. Feel free to chat to developers, other fans, or just hang around and discuss the development and everything else regarding Operation Black Mesa. This the official Operation Black Mesa Steam Community Group. We are in no way related to or cooperating with the team behind Black Mesa Source.
Operation Black Mesa is a total Source remake of Half Life: Opposing Force. THIS GROUP IS NO LONGER UP-TO DATE! MAKE SURE YOU MIGRATE OVER TO OUR NEW GROUP:
