OneRooms
by viktoricto
OneRooms, a Forge mod for Minecraft 1.20.1, places players in a procedurally built complex of over 100 room layouts and asks them to investigate strange tectonic activity.
What it does
Players take on the role of a detective assigned to look into abnormal tectonic activity, which eventually leads to an unfathomable residential complex known as OneRooms. The complex is generated procedurally, so each room layout differs, and five dimensions extend the setting beyond it. Through the mod, players encounter OneRoomer entities, with more than ten variants that each behave differently.
OneRoomers are friendly at first, trade with players near their shop, and use echolocation to find the player. The mod notes that a friendly OneRoomer turns more aggressive the deeper a player explores and the more order they disrupt, and that hitting one makes it hostile. Evidence collection and a cool weapon support the investigation. The mod is licensed under the MIT License and is not open source. Every player and the server need a copy of the mod. Forge files exist for 1.20.1 only, and the latest is 1.0.0 from the beta channel, published on 2026-03-22.
Key features
Procedural room layouts
The complex is assembled from more than 100 room layouts, so exploration differs between worlds.
OneRoomer variants
More than ten OneRoomer variants appear, each with its own behavior, including echolocation.
Trading near the shop
OneRoomers near their shop can be traded with, while a hostile reaction follows if one is attacked.
Evidence collector
An evidence collector item supports the detective role by gathering clues while players explore the complex.
Five dimensions
The investigation extends across five dimensions, each adding its own layouts and entities.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Single-player investigation
Players follow the detective storyline alone, following tectonic clues into the complex.
Multiplayer play
The mod works in multiplayer, where servers can set the player count with the setplayers option.
Who it’s for: Players who want a horror-tinged exploration mod with procedural layouts and a detective storyline. The author recommends playing with OptiFine or Sodium, and notes that vanilla with OneRooms works well.
Questions
Does OneRooms need to be installed on the server?
Which Minecraft version does OneRooms support?
Does OneRooms work in multiplayer?
Which rendering mods does the author recommend with OneRooms?
In the catalog
OneRooms is one of 7,555 Cursed mods on ModsFinder, and one of 3,426 Cursed mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
In this mod you'll be playing as a detective. You was assigned to invistigate abnormal tectonic activities but eventually found something unfathomable - giant illegal residential complex "OneRooms". There you will encounter OneRoomer, Histor and more interesting entities.
Official listing
- Modrinth page
- modrinth.com/mod/onerooms
- Owner
- viktoricto
- Published
- 2026-03-22
- Updated on Modrinth
- 2026-03-22
- Facts verified
- 2026-10-15