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Undertale Engine NEO

Version: 0.2.3about 1 month ago

An undertale engine for gamemaker filled with features from the original game. From battles, to menus, to naming, to cutscenes.

Welcome to my Undertale Engine for Gamemaker, I hope you enjoy working with it, as it is the product of so much research hard work. for questions about the code or feedback, message naguiram (me) on discord.

This engine features pretty much everything that an undertale fangame needs and more.
From a language system, to a border system, to a party system (more than 1 party member if you want!), to a file system (you can have more than one if you want!) to a battle system, to every menu from undertale, from the title screen, to the naming screen, and the settings menu!

Development Stage

Complete

Engine/Language

Game Maker: Studio

Published On

April 11, 2026

Nagui @Naguiram

Pinned1 month

Hello! Welcome to my Undertale Engine! It features every feature that an Undertale fangame needs! You're free to use it without credits!

Make sure to get the latest release from Github. On the page, just click code then download:
https://github.com/naguiramiu/Undertale-Engine

Nagui @Naguiram

8 hours

Small update, massively increased performance when saving significantly large savefiles with the "ENCRYPT_SAVEDATA" flag on. There shouldnt be any stalling now. This was only felt with saving many giant files at once, but has been dealt with either way.