The Three Dragon Story is an unlicensed shoot-'em-up that is noticeably inspired by Konami's Knightmare and even improves upon it in several aspects, such as adding a health bar and a proper weapons system.
It is also known for being very difficult and punishing, even having design features that would not look out of place in a bullet hell game (years before the term itself was even coined).
Developer Credit#
Present at offset 0x5B6 in the MSX version is a text string that contains a build date, as well as credits for the game's programmer and composer. The last portion (not highlighted in red) is also present in the Master System version at offset 0x5D9.
1989/10/03 PROGRAMMED BY LEE-SANGHUN MUSIC HEADHIT HEADHIT
(Source: tikal.)