Ikemen GO is an open source fighting game engine that supports resources from the M.U.G.E.N engine, written in Google’s programming language, Go. It is a complete rewrite of a prior engine known simply as Ikemen.

Features

Ikemen GO aims for backwards-compatibility on par with M.U.G.E.N version 1.1 Beta, while simultaneously expanding on its features in a variety of ways.

This does not mean bug-for-bug emulation. Behavior may intentionally differ when matching M.U.G.E.N would mean preserving bugs, quirks, or unnecessarily limiting the engine.

Refer to our wiki to see a comprehensive list of new features that have been added in Ikemen GO.

Installing

Ready-to-use builds are available in the releases section. Stable releases use tags such as v1.0.0, while release candidates use tags such as v1.0.0-rc.1 and are marked as pre-releases. Nightly builds are updated after each commit to develop and may be less stable.

System requirements

A GPU supporting OpenGL 3.3, OpenGL ES 3.2 or Vulkan is required.

Windows 7/8 and 32-bit Windows are no longer supported; use an older release if you need them. Intel macOS builds are not currently published.

Running

Download the ZIP archive that matches your operating system and extract its contents to your preferred location.

On Windows, double-click Ikemen_GO.exe. On macOS or Linux, double-click Ikemen_GO.command. On Android, install ikemen-go.apk from the Android archive. On iOS / iPadOS, sideload Ikemen_GO-<version>-ios.ipa with AltStore / SideStore (for updates, add the altstore-source.json link from the same release as a source) or Sideloadly, which sign it with your Apple ID. Free Apple IDs require refreshing the app every 7 days. Jailbroken and TrollStore devices can install it directly.

Developing

These instructions are for those interested in developing the Ikemen GO engine itself. Instructions for creating custom stages, fonts, characters and other resources can be found in the community forum.

Building

For setup and platform-specific steps, see BUILDING.md. It covers Windows, Linux, macOS, Android, and iOS.

Debugging

In order to run the compiled Ikemen GO executable, you will need to download the engine dependencies and unpack them into the Ikemen-GO source directory. After that, you can use Goland or Visual Studio Code to debug.

Troubleshooting

If you run into any issues with Ikemen Go, you can report it on our issue tracker. It is recommend to read this page before submitting a bug report.

References

• The original reposity of Ikemen GO. This project was forked from this repository due to its original author seemingly abandoning the project.

• The default motif bundled with the engine. Note that this motif is licensed under CC-BY 3 rather than Ikemen GO's source, which is MIT.

Name

"Ikemen" is an acronym of:

いつまでも 完成しない 永遠に 未完成 エンジン
Itsu made mo Kansei shinai Eien ni Mikansei ENgine

License

Ikemen GO engine is under the MIT License. Bundled screenpack assets are under Creative Commons licenses. See LICENCE.txt for more details. This program dynamically links FFmpeg (LGPL v2.1); the iOS build links it statically, and the full source of the engine and the iOS app is public so it can be relinked.

The exact corresponding source for the FFmpeg build is provided on the release page as src_ffmpeg.tar.gz. You may rebuild this application against a modified FFmpeg.