Basalt Arena
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.21.1 on NeoForge. On other versions it may install and then do nothing.
An Iterative Mod
The concept of this mod is simple and experimental:
I created three versions of the same basalt boss, each one developed in a different amount of time — 10 minutes, 1 hour, and 10 hours — to showcase how a boss can evolve with more polish and ideas.
The first two versions of the boss are only available in Creative mode.
The final and most advanced version naturally spawns inside a dedicated structure called the Basalt Arena.

⚔️ Basalt Guardian
The Basalt Guardian is able to heal itself using the four Basalt Crystals surrounding the arena.
However, these crystals can be destroyed when the boss accidentally shoots them with its own attacks.

🔥 Basalt Wand
If you manage to defeat the Basalt Guardian, it will drop the Basalt Wand.
This powerful item is fueled by magma blocks and allows you to shoot like the boss !

🎥 This mod was created as part of a YouTube video that will be released very soon on my channel — stay tuned!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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 CurseForge — 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 lairsbossrush-1.0.0-neoforge-1.21.1.jar — drop this file into the mods folder
- Download size: 423 KB
- Download link checked 3 Oct 2026 — working
These come from our own check of the pack file, not from the source page.