Lv.99 chocobo isn't a "rare game" per se. A rare enemy yes, but not from the category rare game. I never fought one, though I tried to spawn one at one point, unsuccessful as you can guess.

Anyway, from all the official 80 rare game, the hardest for me will always be Disma. Not only does it only have 5% of chance of spawning, for some lovely reason, everytime I play, he always spawns on my first visit to his place and won't be gone till I do kill him (he's one of those that gives trophies, if I remember well, and for that, I'm glad). Disma literally starts obliterating my party easily, and with all the other undead around, it's hard to keep alive with the constant hoard of attacks.

NG- Disma was one of the only base game fights I had no idea what to do at first lol

Ye disma of course. larva eater is longest spawning because you must kill 255 in great crystal this enemies took around Hours and hours . Lv99 red chocobo ?? I never killing first time. when I read how to spawn red chocobo, I m Soo confuse.this any one ever beat this red chocobo?

Disma always. Strange how enemy red chocobo doesn't count rare game ??

@Let s go everywon911 of course larva eater difficulty to spawn .this rare enemies is easier kill him but spawn is tough. I m lucky I have weapon ultimate dagger danjuro/mina