NEXO(Nuclear Engineering and X-factor Optimization) is an ambitious mod designed for the Fabric modloader, introducing complex nuclear technologies into the Minecraft world. Built for players who love automation and engineering, NEXO allows you to create highly efficient nuclear reactors, manage energy/fluid systems, and explore advanced machinery for resource processing.
Features: Nuclear Reactors: Design and build powerful reactors with custom components and manage their energy output. Energy Management: Optimize energy distribution across your base with cutting-edge technology.
For an optimal experience, use Roughly Enough Items (REI) along with Architectury API and Cloth Config API to help manage recipes and configurations. If you need any extra information go to our wiki or discord.
Since this mod is in its early stages you should stay tuned for many more updates as the mod continues to develop! Feedback, suggestions and issues are always welcome on the GitHub page and discord.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.19.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as nexo-alpha-0.0.549.jar — drop this file into the mods folder
- Download size: 890 KB
- Download link checked 5 Sept 2026 — working
These come from our own check of the pack file, not from the source page.