PSR is a group of Source Engine developers, currently focusing on Black Mesa: Hazard Course, an addon for the Half-Life reimagining Black Mesa.

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Black Mesa: Hazard Course

Black Mesa: Hazard Course

First Person Shooter

Black Mesa: Hazard Course is an add-on for the well known Source Engine mod, Black Mesa. Using Black Mesa assets as well as much of our own custom made...

Peer Review

Peer Review

First Person Shooter

Peer Review is a reimagining of Half-Life's third and final expansion, Half-Life: Decay. Return to the Black Mesa Research Facility and relive the chaos...

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