This is a likely an unencrypted version of The King of Fighters 2000 arcade game. The lack of encryption suggests it's either an early release or a modified version of the game.  The core gameplay is identical to the original, focusing on 3-on-3 team battles with special moves and unique character attributes. SNK developed this game. 

The King of Fighters 2000 (not encrypted)

The King of Fighters 10th Anniversary 2005 Unique (version)