One thing I have learned with the Fusion adapter is the pins must be clean on the cart and adapter itself. I had a few games i had to re-insert about 2 - 3 times for garbled graphics to go away. Not inserting the adapter all the way and pulling it up just a bit would clear garbled graphics or sound issues at times.
The King of Fighters 2000
This is the discussion for The King of Fighters 2000 in the game database, where you can also see its collection and compatibility reports.
Compatibility reports for The King of Fighters 2000
From the game page, where reports can be added or verified.
Works Fusion (3) on NEO-0, 5V, Japan console
Reported by Fuji on Nov 1, 2026. Verified by 0 others.
Works with issues Fusion (Aliexpress) on NEO-AES 3-6, 9V, Japan console
Reported by Gamesboro on Sep 12, 2026. Verified by 0 others.
Issues: Graphical glitches
See screenshot for graphical issue during matches. Text is garbled.
Discussion
I'll have to try pulling it up a bit.