Super Secret Doors

Each door in the mod copies the look of a common block. Planks, logs, stone, cobblestone, stone bricks, deepslate, netherrack, andesite, diorite, granite, blackstone, polished basalt and bookshelves all have a matching door, so a builder can place one where a plain block would normally sit. Because the door shares its texture, it is not immediately apparent to a visitor, which makes the mod useful for secret bases and hidden rooms built in survival worlds or on adventure maps.

The mod is distributed for Forge and NeoForge, with release builds covering 1.16.5 – 1.21.4 and files published for 1.16.5, 1.18.2, 1.19.1, 1.19.2, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.21.1 and 1.21.4. It runs on the client and the server, so both need it, and the code is released under the MIT License as open source. Four other mods depend on it: Secret BOP Doors, Secret RU Doors, Secret BYG Doors and Secret CE Doors each add their own biome-themed variants of the disguised doors.