Steam Playtests
Halo Wars Community Mod Tools

Open now · By request

Halo Wars Community Mod Tools playtest

by New Arcadia

Create and manage mods for Halo Wars: Definitive Edition and Halo Wars 2. Edit scenarios and game data, work with models and animations, and prepare mod files with a free Windows and Linux toolkit. Halo Wars 2 support is still in development.

It's free to ask. The developer chooses who gets in.

Access
By request
Planned release
Coming soon
Developer
New Arcadia
Platforms
Windows, Linux
Languages
English

How to join the Halo Wars Community Mod Tools playtest

  1. Open the game's Steam page with the Request access button. Sign in to Steam if it asks.
  2. Request access to the Halo Wars Community Mod Tools playtest there. It's free and doesn't commit you to anything.
  3. The developer lets players in, often in batches, so it can take a while. Steam emails you when you're in, and the playtest appears in your library.

New to playtests? How Steam playtests work

About Halo Wars Community Mod Tools

Halo Wars Community Mod Tools is a free Windows and Linux toolkit from New Arcadia for creating and managing mods for Halo Wars: Definitive Edition and Halo Wars 2. Organize projects, edit scenarios and game data, work with models and animations, and prepare files for your mods.

Early Access and Playtest

We plan to launch Early Access in late 2026, or Q1 2027 at the latest. The full version has no announced release date.

You can request Playtest access on this page. Requests are collected now, and selected participants will be notified when access is granted.

Start with Project Manager

Create or open a project from the shared library, configure game and content paths, then launch Cutter or Forge for the work you want to do.

Edit Halo Wars scenarios in a 3D viewport with terrain and lighting controls, object properties, asset browsing, and model and animation previews.

Edit mod data in searchable workspaces for objects, squads, leaders, technologies, powers and abilities. Manage project resources, audio and particles, and build your mod output.

Serina provides the Halo Wars: Definitive Edition mod loader and runtime extensions, including supported loose audio, generated Wwise banks and mod diagnostics.

Anders is our open-source Blender addon. Import, edit and export supported UGX models, UAX animations, materials, textures, visual definitions and damage data for both Halo Wars games. Requires Blender 4.2 or newer.

Create and expand Halo Wars 2 PKG archives, convert XML to and from XMB, rebuild file manifests, and process package collections with batch tools.

Current support

Halo Wars: Definitive Edition support is the most complete. Halo Wars 2 support is still in development, and some formats and workflows remain incomplete or experimental. Keep backups of your projects.

Halo Wars: Definitive Edition and Halo Wars 2 © Microsoft Corporation. Halo Wars Community Mod Tools is an independent fan-created toolkit distributed under Microsoft's Game Content Usage Rules. It is not endorsed by or affiliated with Microsoft.

A legally obtained copy of Halo Wars: Definitive Edition and/or Halo Wars 2 is required. The games and their assets are not included with the toolkit.

From the game's Steam page.