The legacy C++ version of IKEMEN go plus / plus ultra before it was switched to the golang language that everyone knows today. here's some info:

I.K.E.M.E.N. Plus Ultra is an updated version of the OLD Ikemen Plus (an Open Source Fighting Game Engine that supports resources from the M.U.G.E.N Engine). This engine was made by Suehiro under S-SIZE Project, improved by K4thos and currently in development by CD2 with some features developed by Strong FS and PlasmoidThunder.

Note

• If you are looking for the official latest/current Ikemen Engine version, is called Ikemen GO.
• Consider this Ikemen Plus Ultra branch as an Alternative in case that Ikemen GO doesn't work for you.
• The current version is a public development release for testing purposes, may contain bugs and incomplete features, this means that comprehension, help and cooperation are appreciated.
• This engine can be used to Create Advanced MUGENS or Fighting Games, which can be run on Low resources PC, without a graphics card (Because can use DirectX Render).

Games Made with this Engine:

• MUGENGERS: THE OROCHI'S ORIGIN
• ULTIMATE SMASHBOX
• ???

Table of Contents​

• Minimum System Requirements
• Roadmap
• Tutorials
• Resources
• Tools
• Engine Manual
• FAQ
• About All IKEMEN Versions
• References
• License

Click to expand...

Minimum System Requirements​

• Operating System:
  • Windows XP (Service Pack 3) 32 Bits
  • Linux: Wine or a Windows Virtual Machine is recommended, until an official port is released.
  • Android: Winlator is recommended, until an official port is released.
• CPU:
  • Intel Atom CPU N455 (1.66GHz)
• GPU with support for DirectX 11 or OpenGL 2.0:
  • Intel Graphics Media Accelerator 3150 (256MB)
• Memory:
  • 1GB RAM
• Storage:
  • 2 GiB required

Warning

THE ENGINE MAY NOT WORK IN WINDOWS 11. However, it was verified that it works on Windows 11 Version 24H2.

Source: https://github.com/CableDorado2/Ikemen-Plus-Ultra
Source 2: https://github.com/acdgames/Ikemen-Plus