This is a hack for the JP version of Megaman called Rockman 2 - Dr. Wily no Nazo. The hack changes the weapons, bosses (not sprites), level graphics, and level layout.
![[FDS] Super Mario Bros 2 (Japan) Level Editor - jGreatEd](/utilities/screenshots/1485screenshot1.png "[FDS] Super Mario Bros 2 (Japan) Level Editor - jGreatEd")
