Deltarune Project

This mod adds various elements of Deltarune chapters 1 and 2 to Minecraft. There are many new materials and bosses added to the game.

1.2K Downloads

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About this Mod

This is the Deltarune Project. This mod adds many bosses and weapons from Deltarune chapters 1 and 2. This includes bosses like Spamton, Lancer, and Jevil and weapons like the Devilsknife, Brave Ax, and Hero's Sword.

Available Versions

Deltarune Project 1.3.0release

MC 1.21.8neoforge

April 17, 2026

Deltarune Project 1.3.0release

MC 1.21.4neoforge

December 21, 2025

Deltarune Project 1.3.0release

MC 1.20.1forge

December 21, 2025

Deltarune Project 1.2.1 Forge-1.20.1release

MC 1.20.1forge

September 30, 2025

Deltarune Project 1.2.1 Neoforge-1.21.4release

MC 1.21.4neoforge

September 30, 2025

How to Install Deltarune Project 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 (1.21.8).

Install Mod

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

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.8, 1.21.4, 1.20.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Deltarune Project 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 (1.21.8). You can switch loaders with one click in the panel.

Is Deltarune Project compatible with forge and neoforge?

Deltarune Project officially supports forge, neoforge for Minecraft 1.21.8, 1.21.4, 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Deltarune Project – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Deltarune Project 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.