Foreword

DEETS++ is an asanine game with modding support already built-in and made in mind. Which means you can make it even MORE asanine!!

On a more serious note though, there are some things you need to be aware about:

Modding in DEETS++ is achieved via the engine used to make the game, which is the Godot Engine. Godot has its own community and an entire documentation to go off, so please make sure to explore that before starting to mod this game! This guide WILL expect you to know how to code in C# and how to use Godot already.

When using Godot, you’ll want the .NET release of whichever version the latest DEETS++ version uses when making mods. You can see all the versions they’ve released here.

As of July 2026, we’re using version 4.8.dev1.mono.

With that being said, let’s set up your environment…