
Sub Terra is a first person psychological horror game set deep underground. As a maintenance worker, your job is to fix a broken water line at the end of tunnel 04-R. Enter the tunnel, repair the pipe, and get out.
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. Copies below reflect the player base, not paid sales.
Media

About

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.
Genres
Stats
Languages: English**languages with full audio support
Engagement
Reviews
Themes across 42 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
This game got me good with a couple of those jump scares. Hated that messed up dog thing. Definitely will be in my nightmares later. 10/10 good mini horror game. (Less than an hour to beat the game)
Crazy work you've done there bud ! Some scenes are actually so cinematographic. It being your first game is beyond comprehension. Even got settings to optimize the game. (Optimization being so rare these days)
I really enjoyed this game, it was very exciting and gripping and also funny👍👍👍
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
Hours played at review time, across 42 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
Das ist das beste Horror Game was ich jeeeh gezockt habe. Das ist mein erstes. :( Aber ist zu Kurz
Got soft locked in the beginning
Приключенческий симулятор исследования пещер с элементами выживания: игрок спускается в подземные лабиринты, изучает геологические образования, собирает ресурсы и старается не заблудиться в темноте, управляя запасами света, кислорода и снаряжения. Плюсы: реалистичная атмосфера подземелья — детализированные текстуры пород, игра света и тени, звуки капели и обвалов создают эффект присутствия; образовательная составляющая — в игре встречаются реальные типы минералов и геологические структуры с краткими пояснениями; система ориентирования — использование маркеров, карт и природных признаков для навигации добавляет стратегический элемент. Минусы: медленный старт — первые вылазки посвящены освоению базовых механик, динамика нарастает не сразу; однотипность локаций — многие участки пещер похожи друг на друга, что снижает ощущение уникальности зон; жёсткие ограничения ресурсов — частые неудачи из‑за нехватки света или кислорода могут вызвать фрустрацию у игроков, не склонных к выживальному геймплею. Итог: подойдёт любителям спелеологии, симуляторов выживания и исследовательских игр — впечатляет реалистичной атмосферой подземелий, образовательной ценностью и продуманной системой навигации. Может разочаровать неторопливым началом, сходством участков пещер и высокой сложностью из‑за жёсткого лимита ресурсов.
Enjoyed that seeing as it was the developers first game. I hit 1 bug which killed me...it was my fault to be honest LOL....at one stage the monster was just sitting there doing nothing, not moving...so i walked from a distance to get a closer look....the moinsters head was stuck in the wall....so i figured ohh a bug now i can finish in peace and quiet....so i went in for a closer look to see if ireally was stuck due to a bug....DAMN it took its out the wall and got me and kileld me... took me 3 attempts to find the hammer while being cchased and make it to the lift... :) Nice free horror game enjoyed it. The game of cat and mouse in the winding tunnels was interesting. Why wasnt this game able to be full screen though? In settings on main menu you can select full screen, window full screen but makes no difference, you still end up with black bars either side. I think maybe this was the developers intention for the black bars to add to the effect to make it look retro...maybe? No isuses all good. The horror parts were good especially when returning to the house with the creepy statues and crosses. I liked it. Tense and scary for me. 7/10. The task at hand was pretty easy to fix the water pipe in 0-4R....but I didnt know why we had to turn the other wheels in the other corridors? What did they do? there was no notificaiton sound to say they did something... Good free short horror game overall.
this was really spooky, loved the narrative and atmosphere. amazing game
For a free horror game it isn't too bad. No real "scares". Just a dude fixin a pipe stuck between dreamland and reality. I think he needs to put in a complaint with HR. 6/10 ON THE PEAR SCALE!
Fantastic horror game and great start for a first time dev. Easily one of the best free horror games I've played. Solid scares, interesting environments and nice surprises. Doesn't overstay it's welcome and has an interesting little story. Worth a play!
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
Related
| House Flipper | $58.4M | 92K | 94% | $24.99 |
| BMX Streets | $3.3M | 4.4K | 80% | $24.99 |
| gogh: Focus with Your Avatar | $2M | 5.3K | 91% | $11.99 |
| Drunken Wrestlers 2 | $2M | 18.7K | 87% | $3.99 |
| Sub Rosa | $1.8M | 3.4K | 69% | $14.99 |
| Blazing Beaks | $1.1M | 2.6K | 83% | $14.99 |