Uploaded February 2025 | Updated September 2026, 2 weeks ago

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The mod was created by FreeSlave.
Cover image created by @RunThinkShootLive, I edited the image to 1280x720 and created a thumbnail.
Mod download, info and ratings:
moddb.com/mods/half-secret


0:00 Chapter 1: Black Mesa Inbound
1:49 Chapter 2: Disaster
3:59 Chapter 3: Yellow Loader
14:50 Chapter 4: Green Complex
24:19 Chapter 5: Base Storage
38:42 Chapter 6: Biodome
51:29 Chapter 7: Hydrofauna Lab
1:03:39 Chapter 8: Tunnel
1:30:46 Credits