Survival Islands

Datapack that creates Survival Island worlds.

18.8K Downloads

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About this Mod

Survival Islands

This is a datapack that changes the overworld generation to create islands in an endless ocean. Along with changing the biomes, the terrain has been slightly altered as well, always being flatter near coasts for the more traditional survival island experience, as well as making oceans ~1.5x deeper. It is a very small modification and should be compatible with most other biome and terrain mods.

I highly recommend using Jacobjo's Datapack Map to scout the seed if you are wanting to find the perfect spawn island.

Available Versions

[MOD 1.20-26.1] Survival Islands 1.1.0release

MC 1.20, 1.20.1, 23w31a, 23w32a, 23w33a, 23w35a, 1.20.2-pre1, 1.20.2, 23w40a, 23w41a, 23w42a, 23w43a, 23w43b, 23w44a, 23w45a, 23w46a, 1.20.3-pre1, 1.20.3-pre2, 1.20.3-pre3, 1.20.3-pre4, 1.20.3, 1.20.4, 23w51a, 23w51b, 24w03a, 24w03b, 24w04a, 24w05a, 24w05b, 24w06a, 24w07a, 24w09a, 24w10a, 24w11a, 24w12a, 24w13a, 24w14a, 1.20.5-pre1, 1.20.5-pre2, 1.20.5-pre3, 1.20.5-pre4, 1.20.5-rc1, 1.20.5-rc2, 1.20.5-rc3, 1.20.5, 1.20.6, 24w18a, 24w19a, 24w19b, 24w20a, 24w21a, 24w21b, 1.21-pre1, 1.21-pre2, 1.21-pre3, 1.21-pre4, 1.21-rc1, 1.21, 1.21.1, 24w33a, 24w34a, 24w35a, 24w36a, 24w37a, 24w38a, 24w39a, 24w40a, 1.21.2-pre1, 1.21.2-pre2, 1.21.2, 1.21.3, 24w44a, 24w45a, 24w46a, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1fabric, forge, neoforge, quilt

March 25, 2026

[MOD 1.20.1-1.21.11] Survival Islands 1.1.0release

February 22, 2026

[DP 1.20-26.1] Survival Islands 1.1.0release

February 22, 2026

[MOD 1.20-1.21.10] Survival Islands 1.0.3release

MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric, forge, neoforge, quilt

October 17, 2025

[DP 1.20-1.21.10] Survival Islands 1.0.3release

MC 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10datapack

October 17, 2025

How to Install Survival Islands on Your Server

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (26.1).

Install Mod

Open the mod browser in the dashboard and search for "Survival Islands". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

26.1, 1.21.11, 1.21.10 (+86 more)

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Survival Islands server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (26.1). You can switch loaders with one click in the panel.

Is Survival Islands compatible with datapack and fabric and forge and neoforge and quilt?

Survival Islands officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 26.1, 1.21.11, 1.21.10. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Survival Islands – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Survival Islands consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.