IKEMEN¶

Overview¶

IKEMEN GO is a modern reimplementation of the M.U.G.E.N fighting engine that adds rollback-friendly netcode, Lua scripting, and widescreen support. REG-Linux treats it as a dedicated engines entry so you can download IKEMEN-based projects and launch them with the same front-end flow as other native engines.

Quick reference¶

ROM folder: /userdata/roms/ikemen
Accepted formats: .ikemen, .pc
Engine: IKEMEN GO native binary
System group: engines

BIOS¶

No BIOS is required.

Game files¶

Place each IKEMEN project (usually distributed with a system.def plus character/stage folders) inside /userdata/roms/ikemen/. Typical folders contain data/, chars/, portraits/, and save/. The engine expects version 0.98.x content on REG-Linux v36–39 and version 0.99 or newer on v40+, so ensure your data matches the shipped engine level. If you upgrade REG-Linux and see JSON errors, delete save/config.json inside the game directory and rebuild the config from the in-game menu.

If your game uses .zss files (e.g., action.zss, common1.cns.zss, functions.zss), copy them from the IKEMEN GO GitHub data/ tree so the engine has the required combat definitions.

Engine¶

IKEMEN GO¶

The IKEMEN binary uses the standard Quick Menu ([HOTKEY] + Start) for video/shader overrides (ikemen.videomode, ikemen.bezel, etc.) and replicates M.U.G.E.N’s .def structure. Command-line options remain per the original engine, but REG-Linux handles most configuration through Quick Menu overrides.

Controls¶

Fighting games use the usual RETROpad layout. Bind movement to the D-pad/analog stick, assign light/medium/heavy buttons, and map Start/Select to pause or menu access. Use the IKEMEN in-game options or /remapping_controls_per_emulator to tweak any missing keys.

Troubleshooting¶

Delete save/config.json when migrating from IKEMEN 0.98 to 0.99 to fix JSON parsing errors.
Verify required .zss files in data/ for 0.99 titles; missing files trigger startup failures.
For other issues consult the generic support pages.