An Undertale & Deltarune Mod

[W.I.P] - This mod will add multiple characters, attacks, weapons, structures, lore, and more from the Toby Fox games into Minecraft

12.4K Downloads

forgeadventuremagicmobs

Rent Server with this Mod

Screenshots

About this Mod

[Very early in development] - Made in MCreator

I'll try to keep the quality bar high.

REQUIRES GECKOLIB

Updates

UNDERTALE and DELTARUNE is by Toby Fox

For Forge 1.20.1

Available Versions

An Undertale & Deltarune Mod 1.0.6release

MC 1.20.1forge

June 30, 2024

An Undertale & Deltarune Mod 1.0.5release

MC 1.20.1forge

December 31, 2023

An Undertale & Deltarune Mod 1.0.4release

MC 1.20.1forge

December 23, 2023

An Undertale & Deltarune Mod 1.0.3release

MC 1.20.1forge

December 16, 2023

An Undertale & Deltarune Mod 1.0.2release

MC 1.20.1forge

December 9, 2023

How to Install An Undertale & Deltarune Mod on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).

Install Mod

Open the mod browser in the dashboard and search for "An Undertale & Deltarune Mod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forge

Minecraft Versions

1.20.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

An Undertale & Deltarune Mod server crashes on startup – what to do?

Most common cause: wrong forge 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 (1.20.1). You can switch loaders with one click in the panel.

Is An Undertale & Deltarune Mod compatible with forge?

An Undertale & Deltarune Mod officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with An Undertale & Deltarune Mod – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if An Undertale & Deltarune Mod 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.