
No Superflat Slimes
removes slimes in superflat worlds.
Screenshots

About this Mod
DESCRIPTION
This data pack removes naturally spawning slime from superflat worlds.
INSTALLATION GUIDE
- go to your saves folder located here on Windows:
C:\Users(your name)\AppData\Roaming\.minecraft\saves
- put the zipped file in the data packs folder, and either restart your world or execute /reload
OTHER THINGS TO NOTE
slimes spawned using spawn eggs will not be killed.
if you want to spawn a slime with /summon, give it the custom EntityTag "dontkill" and it wont die
for feedback, bug reports, or other help, join the discord server from the links section of this page!
Available Versions
How to Install No Superflat Slimes on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set datapack Loader
In the panel under "Egg", select the datapack loader and matching Minecraft version (26.1.2).
Install Mod
Open the mod browser in the dashboard and search for "No Superflat Slimes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.1.2, 26.1.1, 26.1 (+29 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
No Superflat Slimes 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 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.
Is No Superflat Slimes compatible with datapack and fabric and forge and quilt?
No Superflat Slimes officially supports datapack, fabric, forge, quilt for Minecraft 26.1.2, 26.1.1, 26.1. 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 No Superflat Slimes – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if No Superflat Slimes 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.
Rent Modded Server
Install No Superflat Slimes with just one click on your server.