Testimony - Night Underground
Mandy, a shy 23-year-old girl, accompanies her friends Alice and Karen into the depths of a network of secret tunnels. What begins as a simple photo-taking adventure turns into a nightmare when, deep underground, an unexpected event unfolds.
Last Updated: 6/13/2026
| Steam Price | $4.99 |
| Release Date | 6/1/2026 |
| Developer | Testimony |
| Publisher | 1 Simple Game |
| Steam App Id | 4352290 |
Testimony - Night Underground
Mandy, a shy 23-year-old girl, accompanies her friends Alice and Karen into the depths of a network of secret tunnels. What begins as a simple photo-taking adventure turns into a nightmare when, deep underground, an unexpected event unfolds.
Last Updated: 6/13/2026
- Windows
- Mac
- Linux
About Testimony - Night Underground
Testimony - Night Underground is an Adventure, and Simulation game developed by Testimony. On 6/1/2026, it was released on the Steam Store by 1 Simple Game.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, Testimony - Night Underground supports the following features:
- Single-player
- Steam Achievements
- Family Sharing
From the Steam community, Testimony - Night Underground has been tagged with the following user tags:
- Supernatural
- Story Rich
- 1990's
- 3D
- Walking Simulator
- Psychological Horror
- Stealth
- Simulation
- Mystery
- Horror
- Thriller
- Adventure
- Singleplayer
- Female Protagonist
Media & Sceenshots
Watch the featured video for Testimony - Night Underground and see the latest screenshots from the Steam Store.
Related Packages
Testimony - Night Underground is referenced by 1 package in the Steam Store. A package (or sub) is simply an item that can be purchased on Steam.
| Name | Price | Actions |
|---|---|---|
| Testimony - Night Underground | $4.99 | View |
Supported Languages and Localizations
Testimony - Night Underground is available in 3 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| Spanish (Latin America) | Yes | No | Yes |
| French | Yes | No | Yes |
Discover Similar Games
Find a new game to play just like Testimony - Night Underground through our curated lists. Steambase uses Steam's User Tag and Genre system (and other game stats) to curate a list of the best and most loved games similar to Testimony - Night Underground.
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Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
Testimony - Night Underground data has been sourced from:
- Valve Corporation. (2026, June 13). Testimony - Night Underground on Steam. Steam Store.
- Valve Corporation. (2026, June 13). Testimony - Night Underground. Steam Community Hub.
- Testimony. (2026, February 26). Testimony - Night Underground. Testimony - Night Underground.