World Heroes 2 Jet © 1995 Takara Company, Limited.
European release. Game developed in Japan. For more information about the game itself, please see the original Japanese release entry; "Nettou World Heroes 2 Jet [Model DMG-AWJJ-JPN]".
You can found here some information proper to this version only.
Descriptions from the back cover:
A thrilling fighting game that's in a class by itself!
Super Game Boy compatible!
Choose from 16 heroes - more than any previous Game Boy cartridge! Wreak havoc with special attacks and take in your opponents with trick KOs! Connect to another Game Boy to play against a friend!
GAME ID: DMG-AWJP-EUR
BARCODE: 8 712354 300638
Released in May 1995 in Europe.
Game's ROM.