UnderMod
Items from Undertail and more Submit bug reports and suggestions here: https://discord.gg/PEYAaDqbAf
Screenshots
About this Mod
This is a undertale mod full of undertale items, armor, and more soon! for now we only have a few things for undying
Support Discord: https://discord.gg/HzRGerpqnV
Available Versions
How to Install UnderMod on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.20.4).
Install Mod
Open the mod browser in the dashboard and search for "UnderMod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.4, 1.20.3, 1.20.2 (+2 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
UnderMod server crashes on startup – what to do?
Most common cause: wrong fabric 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 (1.20.4). You can switch loaders with one click in the panel.
Is UnderMod compatible with fabric?
UnderMod officially supports fabric for Minecraft 1.20.4, 1.20.3, 1.20.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with UnderMod – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if UnderMod 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.
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