This simple mod adds a "the floor is lava"-style challenge to the game:
When you spawn, the block you are standing on is recorded. If you ever step onto a different type of block, you are instantly killed.
For example, if you spawn on grass, walking onto dirt or stone will kill you.
Cheese Trick Note that you can cheese the mechanic a little bit by leaping over to a new block type and quitting the game in midair, since the "spawn block" is not saved.The mod is public domain and extremely simple. Feel free to make your own variant! The project sources are released in a ZIP file alongside the mod release.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 26.1.2
- 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.
Verified by MCModsHub
- Ships as floorislava-1.0.0.jar — drop this file into the mods folder
- Download size: 9 KB
- Download link checked 10 Sept 2026 — working
These come from our own check of the pack file, not from the source page.