Arcade version sucks. PS2 version rocks!
This game is very poor in arcades and Neo Geo, but the PS2 port is great. New backgrounds, arrange soundtrack, better controls and selectable bosses are all fantastic additions. KOF fans must have this one.

Absolute game
With the King of Fighters '96, '98, 2002 and NeoWave is one of the best 2D Fighting Game

The King Of Fighters 2003
This is the best KOF from all the KOF series up until now. The speed are fast, it's frame almost the same with the arcade version.There are just one problem.The problem are, this is not an all star KOF series, so there are only few characters.(Total 37 characters including the 2 final boss: Mukai and Adel)

The best KOF yet!
This game kicks ass dude. It's soooo damn fast and to my surprise fun! I love it so much more then 2002! I hope the next KOF games are like this!!! >.< \M/ This game makes up for all the bad ports that SNK have been giving us, please buy this if you’re KOF fan because it really doesn’t get much better then this. SNK Forever~

The King of Fighters 2003
A excellent new beginning for the saga and 2D game on PS2.