ToastyFrog
Inexplicable Treasure Hate
This lead to Mega Man 2 being a passion project by the staff of Mega Man 1 while they were working on various other games. What were some of those games? Why of course, the NES Classics Ducktails, Ducktails 2 and Chip N' Dale Rescue Rangers.
Out of curiosity, where did this info come from? My understanding was that MM2 was developed as a side project while the same team was working on Pro Yakyuu! Satsujin Jiken, Capcom's bizarre baseball/murder mystery adventure game.