Mod the Gungeon API

v1.9.2·Updated 2025-01-21

Adds the good parts of Mod the Gungeon to BepInEx.

About this mod Author’s original text

Mod the Gungeon API

A plugin for BepInEx that adds some of Mod the Gungeon's functionality and also adds backwards compatibility for modders who want to port to BepInEx

Features

Mod the Gungeon API includes:

  • Most of classic Mod the Gungeon's API features (adding items to loot tables, changing strings, replacing and adding textures, etc)
  • A debug/cheat console (F2, ~, /)
  • A debug log that records all Unity logging (F3)
  • Note: this log is disabled by default for performance reasons. It can be enabled in the config file (etgmodding.etg.mtgapi.cfg)
  • A mods menu that shows all enabled plugins (F1)

Useful Links

  • Installation
  • Porting your mod to BepInEx
  • Converting.json files to.jtk2d files
  • BepInEx Example Mod (Plain)
  • Download Zip
  • GitHub Repository
  • BepInEx Example Mod (Items)
  • Download Zip
  • GitHub Repository
  • Publicized and Stripped Assembly-CSharp.dll
  • GitHub Repository

Credits:

  • SpecialAPI - main developer.
  • Captain Pretzel - optimizing the API to make mods load faster.
  • An3s - initial console + debug log port.
  • KubeRoot - updating SGUI to the latest version.
  • KyleTheScientist - base MTG example mod zips.

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

BepInEx-BepInExPack_EtG

File & checksum

Filename
Mod_the_Gungeon_API-1.9.2.zip
File size
1.0 MiB
SHA-256
4941ccf4dc325eb6c9826709e9c75ae3ba77969fdc5363c39369d81388e65571
Stored at
2026-10-06 19:24