> For the complete documentation index, see [llms.txt](https://g3m.gitbook.io/g3mwiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://g3m.gitbook.io/g3mwiki/readme.md).

# Home

G3M is a desktop mod manager for GameMaker games. In the current codebase it ships as a Python 3.14+ desktop application built with PyQt6 and focuses on mod browsing, library management, patching workflows, profiles, plugins, customization, and launch automation.

Current code version: **3.2.0**\
License: **GPL-3.0**\
UI framework: **PyQt6 6.7.1**

## Supported built-in games

* **DELTARUNE**
* **DELTARUNEdemo**
* **UNDERTALE**
* **UNDERTALE Yellow**
* **Pizza Tower**
* **Sugary Spire**
* **FRICKBEARS3**

G3M also supports custom single-tab games added through the in-app Game Manager.

## What G3M does

* Browses supported GameBanana sections and installs from GameBanana, URLs, local archives, raw folders, and one-click protocol links.
* Manages installed mods, profiles, mod versions, game versions, blocklist rules, downloads, and plugin state in the local data directory.
* Applies mods with built-in support for `.g3mpatch`, `.xdelta` / `.vcdiff`, `.csx`, raw data files, and extra-file overrides.
* Provides built-in tools for patch create/apply/merge/info/diff workflows through the Modding Tools dialog.
* Loads bundled and local plugins, validates API compatibility, and exposes plugin hooks, settings views, and main views.
* Supports theme import/export, external language files, startup sound and background customization, and bundled theme packages.
* Launches games directly, through Steam where configured, or through desktop shortcuts with captured launch state.

## Quick links

| Resource | URL                                                      |
| -------- | -------------------------------------------------------- |
| Discord  | [discord.gg/2MFdvFfD9a](https://discord.gg/2MFdvFfD9a)   |
| Telegram | [t.me/y\_maintg](https://t.me/y_maintg)                  |
| GitHub   | [github.com/y114git/G3M](https://github.com/y114git/G3M) |

## Wiki structure

* [**Getting Started**](/g3mwiki/getting-started.md) - install, first launch, data folder, and initial game setup.
* [**Interface**](/g3mwiki/interface/interface.md) - tabs, panels, dialogs, and window behavior.
* [**Games**](/g3mwiki/games/games.md) - built-in games, custom games, detection, launch, Steam, and full install.
* [**Mods**](/g3mwiki/mods/mods.md) - formats, importing, creating, editing, versions, and conversion flows.
* [**Features**](/g3mwiki/features/features.md) - profiles, downloads, shortcuts, plugins, updates, and other app features.
* [**Customization**](/g3mwiki/customization/customization.md) - themes, colors, audio, fonts, logo, background, and animations.
* [**Advanced**](/g3mwiki/advanced/advanced.md) - architecture, data layout, localization, networking, patching, and troubleshooting.


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