Game Boy Version Origins
wanted a Game Boy version of Double Dragon II
, Technos Japan
simply took an already-made Kunio-kun
game, Nekketsu Kouha Kunio-Kun: Bangai Rantouhen
and changed the graphics, music and storyline to accommodate Double Dragon
's more realistic style.
DOS Version Source code
Disk 1 of the two disk 3.5" floppy DOS version without sound card support inadvertently includes a deleted file named DRGNSRC.LZH
. This is an archive containing multiple .ASM assembly language files that comprise the game's source code. The file can be recovered by using an undelete utility.