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Unknown: Site-0
"Unknown: Site-0" is a turn-based card game. Site-0 is an underground containment facility. During a sudden breach, numerous highly dangerous anomalies escaped control. You play as an investigator, exploring the unknown, evading or confronting incomprehensible entities, and seeking the truth.

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Features
Single-player
Steam Cloud
Family Sharing
Steam is learning about this game 
Languages:
Interface Full Audio Subtitles
English ✔ ✔
Simplified Chinese ✔ ✔
Traditional Chinese ✔ ✔

Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We hope that Unknown: Site-0 can be released earlier, rather than keeping players waiting for a long time. At the same time, we believe that adopting an early access model will allow us to actively engage with players, gather feedback, and continuously improve and expand the game, with the goal of making it even better.”

Approximately how long will this game be in Early Access?

“The early access period may last more than a year, but we will not set a definite end date. This is because most members of the development team are part‑time, and we may not have enough time to push the game’s development forward. Of course, we will continue to update the game regularly so that players can see progress, until we feel that we are fully prepared.”

How is the full version planned to differ from the Early Access version?

“The full version of Unknown: Site-0 will enrich the game's story and provide players with a richer gaming experience. Going forward, we plan to:

- Add more main story chapters
- Add more cards
- Add more characters and their stories
- Add more monsters and bosses
- Optimize the UI style and control feel”

What is the current state of the Early Access version?

“We have already completed the core combat mechanics and also finished the prologue story.”

Will the game be priced differently during and after Early Access?

“We do not plan to change the price after the early access ends, as we believe the current pricing strategy is already sufficient.”

How are you planning on involving the Community in your development process?

“We will actively cooperate with the community, absorb opinions from the community and players.”
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Join the Unknown: Site-0 Playtest

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This game is not yet available on Steam

Planned Release Date: 2027

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About This Game

Game Introduction & Background Setting

"Unknown: Site-0" is a turn-based card game.

Humanity's abuse of material-energy conversion technology shattered the balance between reality and the Void. The Void began to merge with reality, and monsters descended. The "Void Sickness" they brought ravaged the world, leading to the destruction of civilization.

To fight back against these entities and find a cure for Void Sickness, we established the "Bureau for Special Existence and Anomalous Affairs" (SEAA). We perish in the darkness so that humanity may live in the sunlight.

You will play as an investigator, venturing deep into the underground facility where the containment breach occurred — Site-0. During the sudden breach, a large number of extremely dangerous anomalies escaped control.

With the assistance of P.A.T.S (Primitive Autonomic Terminal Service), explore the unknown, evade or confront those entities beyond human comprehension, and uncover the cause of the incident...

Every choice you make may lead to the truth — or to death.

Game Development Team

Game Programmer: 3cxc
Game Writer: Ahas

Production Supervisor & Scene Modeling: GGBOY

Traditional Chinese Translator & Story Contributor: Mokou
Game Testing Team: sahuang, Bustling

Special Thanks: 潜水可耻但有用 (Character Art), ESCmaka, moimeji

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Due to the fact that the artist we collaborated with left abruptly, and we no longer have sufficient funds to recruit new artists or purchase art resources, and we also do not have dedicated art staff internally, we have, under these circumstances, used AI to optimize and create derivative works from the character illustrations we already possess, so that they can be used in other scenarios. We hold the relevant legal rights to these original assets.

In the process of using AI for creation, we will take measures such as manual review to avoid, as much as possible, AI-generated content infringing on the rights of third parties. We will also make necessary manual modifications to and screening of AI-generated content to ensure that the final art resources used meet our needs.

Currently, we have used AI in the creation of related art resources for character illustrations, store promotional images, and some CG scenes in the story.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Intel(R) Core(TM) i3-7020U @ 2.30 GHz
    • Memory: 2 GB RAM
    • Graphics: Intel® HD Graphics 620
    • Sound Card: Supports all
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: Intel(R) Core(TM) i5-4690 CPU @ 3.50GHz
    • Memory: 4 GB RAM
    • Graphics: Nvidia GeForce GT 710
    • Sound Card: Supports all
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