ONTOS
A sci-fi mystery set on the repurposed moon hotel Samsara. Uncover cryptic experiments, face unsettling encounters, and piece together a mind-bending narrative. The deeper you go, the more the truth unravels as you confront the ultimate question: What is reality?
Last Updated: 12/12/2025
| Publisher | Frictional Games |
| Steam App Id | 2924520 |
ONTOS
A sci-fi mystery set on the repurposed moon hotel Samsara. Uncover cryptic experiments, face unsettling encounters, and piece together a mind-bending narrative. The deeper you go, the more the truth unravels as you confront the ultimate question: What is reality?
Last Updated: 12/12/2025
- Windows
- Mac
- Linux
About ONTOS
ONTOS is an Adventure, and Action game. It was released on the Steam Store by Frictional Games.
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, ONTOS supports the following features:
- Full controller support
- Playable without Timed Input
- Stereo Sound
- Single-player
- Steam Achievements
- Family Sharing
- Adjustable Difficulty
- HDR available
Media & Sceenshots
Watch the featured video for ONTOS and see the latest screenshots from the Steam Store.

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Frequently Asked Questions
Soures & References
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ONTOS data has been sourced from:
- Valve Corporation. (2025, December 12). ONTOS on Steam. Steam Store.
- Valve Corporation. (2025, December 12). ONTOS. Steam Community Hub.
- Frictional Games. (2025, December 12). ONTOS. ONTOS.