Play The King of Fighters '99: Millenium Battle (Prototype) Online
This KOF '99 prototype has that same frantic team battles and striker assists, but with janky animations and some truly wild balance—like playing a beta test from an alternate timeline.

Game Overview
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This prototype version of The King of Fighters '99 is a weird little time capsule—it's got that classic Neo Geo fighting energy, but with some rough edges and differences from the final release. You still pick your three-character team and throw down in fast, flashy battles, but some animations feel unfinished, and the balance is... let's just say "experimental." The striker system is here, letting you call in assists mid-fight, though figuring out which ones actually work takes some trial and error. If you're into fighting game history, it's a neat peek behind the curtain. Just don't expect it to play as smoothly as the polished version.

Download The King of Fighters '99: Millenium Battle (Prototype) ROM
You can download this ROM to play The King of Fighters '99: Millenium Battle (Prototype) offline using an Neo Geo emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.