Read the Create Your Frisk documentation, including guidance and notes for building Undertale fangames.
Unitale
Create Undertale fangames with the Undertale Engine, a downloadable tool for game makers.
About Unitale
The Undertale Engine is a downloadable file for GameMaker Studio 2.x used to make Undertale fangames. It includes a battle system and an overworld system, with support for custom monsters, dialog effects, items, weapons, armor, ACT actions, Soul modes, encounters, cutscenes, tile-based rooms and camera movement.
Use requires a Windows or Mac computer, a copy of GameMaker Studio 2.x with a license, the latest engine file, and a basic understanding of GML. The 1.6 MB undertale-engine.yyz file is imported into GameMaker Studio 2.x to start a project.
Key features
- Custom monsters and enemies with in-battle cutscenes
- Timed attacks using alarms
- Custom dialog with shaking and wave effects
- Custom items, weapons, armor and ACT actions
- New Soul modes with new attacks
- Overworld with branching dialog, encounters and tile-based rooms
Best for: People with basic GML knowledge and GameMaker Studio 2.x who want to build Undertale fangames.
Good for
- Includes both battle and overworld systems in one download
- Supports customization of monsters, dialog, items and Soul modes
- Lists a Discord server for help from community teachers
Watch out for
- Requires a Windows or Mac computer
- Requires GameMaker Studio 2.x with a license and basic GML knowledge
- Developer warns cracked GameMaker versions can corrupt builds or lose progress
Unitale at a glance
- Category
- Gaming › Game Guides, Wikis & Tools
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Unitale FAQ
What is needed to use the engine?
A Windows or Mac computer, GameMaker Studio 2.x with a license, the latest engine version, and a basic understanding of GML.
How is the engine installed?
Download undertale-engine.yyz, open GameMaker Studio 2.x, choose Import and select the file.
Where can users get help?
Through the Discord help server linked on the page, where teachers help when available.
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