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Getting Started with Ultrakill Modding

Welcome to the ultrakill modding tutorial! This guide will teach you how to mod ultrakill

Some things you could do​

This is a list of some things you Could do.

  • Gameplay Changes: Modify damage values, spawn rates or game mechanics
  • Visual Mods: Replace textures, models, UI elements and effects
  • Audio Mods: Custom music, sound effects and voice lines
  • Quality of Life: Add new features or improve UI
  • Content Additions: New weapons, levels or game modes (advanced)

You can do more than this, its just a list of some things you could do

Prerequisites​

  • A Copy of ULTRAKILL
  • Basic understanding of C# programming (variables, methods, classes)
  • Familiarity with Unity concepts (GameObjects, Components) - helpful but not required
  • A C# Code editor such as Jetbrains Rider Community Edition - installation instructions will be included in the tutorial
  • Patience
No modding experience?

This guide assumes you are new to game modding. It will start with simple mods and build up gradually.

Modding​

We will be using BepInEx as our mod loader. BepInEx-5.4.2100 Dotnet 6.0 Minimum, Dotnet 9 Recommended

Path​

Follow these pages in order for the best learning experience:

1. Installation​

Set up your modding environment with BepInEx and essential tools. This will create the foundation for all your future mods.

2. Your First Mod​

Create a simple "Hello World" plugin that displays a message. You will learn the basic structure of a BepInEx mod and see it working.

What's Next?​

After completing the getting started section you will be ready to explore:

  • Core Concepts - Learn about Patching and AssetBundles
  • Tutorials - Step by step guides for common modding tasks

Getting Help​

Stuck on something? Here are your best resources:

Game Updates

Game updates can break mods temporarily. Be patient when updates happen - mod authors need time to update their mods.

Ready to start? set up your modding environment!