Playable bosses in Fatal Fury 1 (PS2 Battle Archives Vol. 1, AES mode)

[Azathoth]

So, what the hell is exactly going on here? I know there's a few ROM hacks to allow the bosses to be played but I've never seen anything about a working PS2 version. Seems like recompiling one of those arcade hacks to work with PS2 emulation would be a ton of pointless effort, but it's obviously more than just a simple GameShark patch code. The VS screen portraits with the garbage text below them don't correspond with any of the boss hack ROMs I've seen (unless I've overlooked one) so it seems like it's a unique version compared to those.

 

[Neo Alec]

On emulators it's actually pretty easy to play as any character by just patching memory, so it's definitely possible on a cheat device.

Fatal Fury - King of Fighters / Garou Densetsu - shukumei no tatakai - NEO-GEO RAM Codes

web.archive.org

 

[Azathoth]

On emulators it's actually pretty easy to play as any character by just patching memory, so it's definitely possible on a cheat device.

True, but using patch codes only they're nearly unplayable. The color palette is broken and the game completely crashes after the first round.

In the PS2 video there's no glitching at all (other than the garbage VS screen text) and all the moves/specials are programmed in correctly.