Litmustest
Litmustest is a Horror Search Action game. Search every room, manage your inventory, solve puzzles and fight the dangers spawning from the depths of this facility. Fixed camera angles and Tank Controls. A limited inventory that forces real decisions about what you carry and what you leave behind.
Last Updated: 5/30/2026
| Developer | Underwater Castle Inc. |
| Publisher | Underwater Castle Inc. |
| Steam App Id | 4233570 |
Litmustest
Litmustest is a Horror Search Action game. Search every room, manage your inventory, solve puzzles and fight the dangers spawning from the depths of this facility. Fixed camera angles and Tank Controls. A limited inventory that forces real decisions about what you carry and what you leave behind.
Last Updated: 5/30/2026
- Windows
- Mac
- Linux
About Litmustest
Litmustest is an Adventure, and Action game developed by Underwater Castle Inc. It was released on the Steam Store by Underwater Castle Inc.
It can be played and ran on both Windows and Linux systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, Litmustest supports the following features:
- Single-player
- Full controller support
- Custom Volume Controls
- Playable without Timed Input
- Family Sharing
- Color Alternatives
- Keyboard Only Option
Media & Sceenshots
Watch the featured video for Litmustest and see the latest screenshots from the Steam Store.
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Frequently Asked Questions
Soures & References
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Litmustest data has been sourced from:
- Valve Corporation. (2026, May 30). Litmustest on Steam. Steam Store.
- Valve Corporation. (2026, May 30). Litmustest. Steam Community Hub.
- Underwater Castle Inc.. (2026, May 27). Litmustest. Litmustest.