
One Survival Island
Java mod listed for Minecraft 1.20–26.x. Downloads from the MC Java Mods app on Android.
I don't know my version or loader

One Island
You spawn on a small survival island, in the middle of an endless ocean world. There are no other islands. Additionally, the oceans generate deeper (this is primarily to stop an issue in vanilla where land generates in ocean biomes).
Island Size Changing/Removing (Datapack ONLY)
Inside the data/one_island/worldgen/density_function/spawn.json file, there are two numbers you can change to adjust the size of the islands. I've left comments in this file for clarification on instructions, but you can modify your island to be thousands of blocks long, or even remove it entirely!
Compatibility
There is a high chance this will be compatible with most packs, although the worldgen may be overridden to this island generation.
Gameplay Notes
- The ocean is deeper than normal.
- There are no Mushroom Islands.
- There will likely be no dripstone caves/deep dark, as those only generate inland.
- Sometimes your island may be overtaken by a river, you can always make a new world to test out a better seed.
I may update this in the future to have these cave biomes though if this becomes popular/requested.
Future Plans
- Allow the mod version to be configured in-game, rather than needing to configure the data pack.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.20, 1.20.1, 1.20.2
- 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 one-survival-island-2.0.1.jar — drop this file into the mods folder
- Download size: 827 KB
- Download link checked 7 Oct 2026 — working
These come from our own check of the pack file, not from the source page.