Rockman 2 : Dr. Wily no Nazo [Japan] ROM Download for Nintendo (NES). Rockman 2 : Dr. Wily no Nazo [Japan] game is available to play online and download only on ROMs Games. Rockman 2 : Dr. Wily no Nazo [Japan] ROM for Nintendo download requires an emulator to play the game offline. This Game is (Japan) region and the highest quality available.