Project Mammut is currently in open beta. It is being updated a lot during this time, and you may run into bugs and other issues. If you'd like to help develop the engine or suggest features, support the project or come find us on Bluesky or Discord.
Project Mammut

Project Mammut

Let us help you build your story

An easy to use HTML 5 Game Engine with a branching Narrative Editor for making Visual Novels and other Games.

Get Started
Project Mammut character art

Everything you need to build a narrative focused game

Contains various tools and editors to help you build your game from concept to release.

Visual Scene Editor

Lay out scenes with a drag-and-drop canvas editor. Add text, images, buttons, video, animators and more, all with simple editing controls.

Branching Narrative

Write dialogue and narrative in a node-based chapter editor built for branching stories. Control game events with simple commands.

Project Editors

Manage the aspects of your game such as characters, styles, and, variables through various editors.

Audio Manager

Simple drag and drop audio management for your game. Add music, ambiance, voice, and sound effects.

Javascript Coding

Program your scenes with JavaScript. Use variables, functions and control events within your game.

Project Export

Games can be easily exported to HTML5 runtimes for Itch.io or stand alone builds for Windows, Linux, or MacOS.

Coming soon

Coming Soon

Spine Characters Support

Bring in Spine 2D skeletal animation characters with full animation control and skin changing control.

Coming Soon

Visual Scripting

Wire up game logic with a easy to use coding node graph editor.

Coming Soon

3D Scenes

Using THREE.js you can create 3D scenes to use within your game with standardised 3D editor controls.

Pricing

Project Mammut is free to use for game development. Developer versions are available if you'd like to help fund development.

Free

€0

The full editor, no feature gate. Currently in open beta.

  • No account needed
  • Build Games for MacOS, Windows and Itch.io
  • Free to use
Get Started

Developer

€20 €7

One-time purchase. Reduced price during the open beta.

  • Reduced while in beta
  • Removes the support reminder screen
  • Be able to suggest and vote on new features
  • Our love!

Supporter

€4 per month

Same as the one off payment but your support will help the ongoing development Project Mammut!

  • Everything in Developer
  • Even more of our love! 💘

Download

Download the client for your platform to get started.

Desktop builds

Available for Windows, macOS, and Linux.

These versions are currently unsigned, please read their README.TXT files to learn how run them on your computer.

Windows Win 10+ macOS arm64 (Apple Silicon) Linux Ubuntu 20.04+
Try the editor in your browser (with some reduced functionality)

Join the community

Report bugs, suggest features, or just say hi.

Discord Bluesky YouTube itch.io Wiki