Half-Life: Opposing Force is an expansion pack for Valve Software's science fiction first-person shooter video game Half-Life. The game was developed by Gearbox Software and published by Sierra Entertainment on November 1, 1999. Opposing Force is the first expansion for Half-Life and was first announced in April 1999. Randy Pitchford, the lead designer on the game, later noted that he believed Gearbox was selected to develop Opposing Force because Valve wanted to concentrate on their future projects. Over the course of development, Gearbox brought in a variety of outside talent from other areas of the video games industry to help bolster various aspects of design. Opposing Force returns to the same setting as Half-Life, but instead portrays the events from the perspective of a U.S. Marine, one of the enemy characters in the original game. The player character, Adrian Shephard.
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Update November 17th 2023: Removed all contents that were included in the 25th anniversary update for HL1 on Steam. This is all of the official content that Valve/Gearbox has released for Half-Life and Opposing Force Deathmatch on PC that is NOT currently included on the Steam versions of the games. All HL1 content is compatible with Opposing Force. However the Opposing Force maps are not compatible with Half-Life 1.
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Half-Life
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the new sprays are included in the game of the year edition of half life
Yes, but not in the Steam version of HL1, which is what most people play on these days.
Thank you very much for this man. I got this for the maps for the most part, kinda hard to come across stuff like the OP4 versions of Hl's DM maps.
thanks,I've been looking for these map for a long time