SubnautiCraft (Minecraft inside Subnautica)
Lets you play Subnautica as Steve, with Minecraft physics, blocks and crafting blended into Subnautica's seafloor.
Releasedby dacotin2

Requirements and setup
Subnautica with BepInEx 5, Minecraft Java 26.3 with Fabric Loader 0.19.5 and Fabric API 0.161.0+26.3 (for example a Prism Launcher instance); JDK 25 and the .NET SDK only to build. The README does not state an operating system.
More Minecraft in Subnautica
Released
Code only