It looks like you're referencing a repack of the Half-Life Complete Collection by a group called KaOs.
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The collection serves as a chronological roadmap of innovation. The original Half-Life famously broke the "Doom-clone" mold by eliminating cutscenes, keeping the player in control of Gordon Freeman to experience the Black Mesa disaster firsthand. Its expansions, Opposing Force and Blue Shift, further enriched this world by showing the same event through the eyes of a soldier and a security guard. It looks like you're referencing a repack of
, seeing the same disaster through the eyes of a security guard just trying to make it to the parking garage. The original Half-Life famously broke the "Doom-clone" mold
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This repack typically includes the foundational titles that defined the first-person shooter (FPS) genre: