
Unknown Rules is an independently created multiplayer online horror game that supports 1-4 players.
Modeled estimate, not a reported figure. How we estimate →
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About
Unknown Rules is an independently developed first-person horror puzzle game.
Every region has its "chosen unlucky ones"—ordinary people who, through sheer coincidence, fall into the Backroom. Before their descent, however, they were simply diligent workers in their respective Frontrooms. You can choose to work alone or team up with friends to complete your tasks. Perhaps, during your routine, an unexpected journey awaits.
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Note: Only one Frontroom level can be selected. All Frontroom levels lead to Backroom Level 0.
Level 1: Office
You are an ordinary office worker. On this day, the office is eerily empty. After working overtime, you decide to rest your head on the desk for a nap. When you awaken, the environment has shifted into something unrecognizable.

Level 2: Logistics Warehouse
You are a night-shift warehouse packer. As usual, you retrieve, package, and ship orders. But upon completing your quota, you discover an unsettling note.
Congratulations—you’ve been chosen. Due to the scale of certain levels, please review the level descriptions before proceeding.
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Currently Developed Backroom Levels
(Descriptive reference order only; not actual gameplay sequence)
Note: Backroom levels are unlocked progressively and cannot be freely selected.
Level 0: The Darkroom
Procedurally generated terrain using PCG technology. Requires real-time lighting (RTX 2060 or higher recommended). A fixed-map version for lower-end GPUs will be added later.

Level 37: Sublimity
A serene "poolcore" environment optimized for multiplayer fun. Currently uses Lumen soft ray tracing.

Level 9: Suburbs
A windswept, sinister suburban nightmare.

Level 1: Abandoned Public Zone
Level 6: Lights Off
Technical note: Current scanning relies on ray tracing (RTX 2060+ required). A low-end GPU alternative will use basic particle scanning (less precise, ignores moving objects, no object data—scenery only).

To survive, manage and use every item you find. Your inventory includes 8 backpack slots and 2 pocket slots.
Energy Drink: Temporarily boosts stamina.
Sanity Pills: Stabilizes your mental state.
Batteries: Restores power to electronic devices.
Mysterious Notes: Provide clues to solve puzzles.
Stamina: Limited endurance—critical during escapes.
Sanity: Fear gnaws at your mind when encountering the supernatural.
Health: Survivable injuries unless facing overwhelmingly powerful entities.
Boredom is inevitable, so I’m developing open-ended features to keep players engaged. Two experimental party maps are now available:
Level 1: Go Parlor
For Go enthusiasts: Challenge a friend to a match while listening to music. Note: This mode is unpolished due to limited development time, but it supports full Go matches.

Level 2: Cinema
Input a video URL (.MP4, .m3u8, or untested rtmp/rtsp streams) to watch together. Basic playback is functional, though features are incomplete. Contact the developer for issues.

New Backroom Level: Level 94 "Animation"
New Frontroom Level: Amusement Park
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, Simplified Chinese, French, Italian, German, Spanish - Spain, Russian, Japanese, Korean
Reviews
这种游戏就别出来骗钱了
バグが多くまともにゲームができません。ライトは使えない。キー設定が保存されない。面白そうと思ってダウンロードしましたが今は遊ぶことはできないです。
玩家看近处的东西就是近视太难受了,道具快捷键也不好用,灯光太暗。弄好再卖游戏吧。 加油
柜子不能躲人, 药片吃了没反应。弄好再拉出来卖吧。。 丢人丢到国外去咯
버그가 많아도 너무 많음. 숨는 공간 안 들어 가지고, 죽으면 몬스터가 그 자리에서 계속 때리고 있고.. 아군 발 소리도 엄청 시끄러움. 고개를 조금만 움직여도 탭댄스 개 지림. 여러모로 아직까진 게임을 할 상태가 아님.
Codé avec le cul.
Related
Related
Trends
Concurrent players on Steam, sampled daily since tracking started.
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.
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