Garry's Mod
Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tool...

Sub Terra is a single-player first person psychological horror game inspired by The Backrooms. As a maintenance worker, you've spent your whole life venturing deep underground to repair pipes, gas lines, you name it. Utilities that we take for granted.
On a day like any other, you enter the manhole and descend the depths to replace a water line at the end of tunnel 04-R. The job is straightforward. The directions are clear.
But your repair doesn't go quite as planned.

Immersive Experience: Realistic graphics and spatialized audio create a truly immersive experience guaranteed to make you feel like you're really 50 feet under.
Unravel a Mystery: Piece together hints and clues to learn the tragic story of what's been buried underground.
Keep an Eye Out: You know the tunnels like the back of your hand, but you're not the only thing down there.
Locations: Your job may be down a manhole, but you'll discover much more than just maintenance tunnels.
Warning: Sub Terra contains loud noises, flashing lights and material that may be disturbing to some individuals.
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Sub Terra is completely FREE to play. You can download and play it without any purchase.
Minimum: Minimum: Requires a 64-bit processor and operating system OS: Windows 10 or higher Processor: Quad-core Intel or AMD 2.5 GHz or superior Memory: 8 GB RAM Graphics: Any DirectX 11 or 12 compatible card Storage: 10 GB available space Recommended: Recommended: Requires a 64-bit processor and operating system
Sub Terra is available on Windows PC.
Review data is not yet available for Sub Terra.
Sub Terra was released on Aug 15, 2025.
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