開発当時、僕らもマークIII版を日本で出すものだと思って、僕はFM Unitを前提にサウンド・ドライバーも対応させて、省データ化の為にノートデータ（ドラムも）や音色指定をPSG,FM共通にしたのですが、海外のみとなりFM音源の搭載されてない音しか当時お披露目出来なくて悲しい思いをしてました。が、北米、ヨーロッパで当時、もの凄く遊んで下さる方々多く、一定の評価を得られた作品だっと思います。89年の9月に”Wonder Boy III: The Dragon's Trap”がリリースされましたが、Genesisの北米発売が89年8月、ヨーロッパはさらに先の90年11月だった事でマスターシステムが長く生き残り”Wonder Boy III: The Dragon's Trap”が海外で遊んで頂ける機会が長く続いたので、そこはラッキーでした。 At the time of development, we also thought that the Mark III version would be released in Japan, and I made the sound driver compatible with the FM Unit, and made the note data (drums too) and tone specifications common to PSG and FM to save data, but it was only available overseas and only sounds without an FM sound source could be released at the time. I was saddened by the fact that I could only present sounds that were not equipped with FM sound sources at the time. In September 1989, ‘Wonder Boy III: The Dragon's Trap’ was released, but the North American release of Genesis was in August 1989. North America was released in August 1989, and Europe in November 1990, so we were lucky that the Master System survived long enough for "Wonder Boy III: The Dragon's Trap" to have a chance to be played overseas for a long time. It was so lucky.