Nihon Falcom
It was ported to the Famicom and released on July 17, a week after the MSX2 version. Based on the staff shown in the ending credits, the Famicom port was developed internally by Nihon Falcom, but it has been said that Compile contributed to it. It was published in Japan by Namco and released two years later for the NES in North America by Brøderbund.