Mega Man 4 IV GB Video Game Cartridge Game Boy 1993Gameboy non oem reproduction Mega Man 4 video game cartridge. Game cartridge comes with a plastic protective case just like the picture shows. Mega Man IV (known in Japan as Rockman World 4) is a 1993 action platformer developed by Minakuchi Engineering and published by Capcom for the Game Boy. While it reuses bosses from the NES, it features entirely original level designs, new story elements, and gameplay innovations that would later become series