Opposing Force 2: Lost - attempt to revive the original Opposing Force 2 mod development, polish up and turn the existing content into something more than an unfinished demo with a few maps.

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Map Labs

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Map Labs is an ongoing anthology of mapping competitions, primarily centered around Valve's games!

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Missing Information aims to recreate Valve's original Half-Life 2 storyline found in Raising the Bar.

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What would Half-Life 2 have been like if we had gotten the version shown to us in the official promotional materials? Coterminus attempts to answer that...

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This is a mod that aims to recreate the Half-Life 2 Beta's 2001 (Original) Story in on full complete version. This mod uses the Leaked 2003 Build of the...