Code Mega Man 2: The Power Fighters description

Mega Man 2, known in Japan as Rockman 2: Dr. Wily no Nazo (ロックマン2 Dr.ワイリーの謎 Rokkuman 2 Dr. Wairī no Nazo, "Rockman 2: The Mystery of Dr. Wily"), and in game as Mega Man II, is an action-platform game. It is the second installment in the original Mega Man series.
The game was released in Japan in 1988 and in North America and PAL regions the following years. Mega Man 2 continues the titular protagonist's battle against the evil Dr. Wily and his rogue robots. The game features graphical and game play changes from the first Mega Man game, many of which have remained throughout the series.
Although sales for Mega Man were unimpressive. Unused content from the previous title was integrated into Mega Man 2. Takashi Tateishi composed the soundtrack, with Yoshihiro Sakaguchi serving as a sound programmer.
With more than 1.5 million copies sold, the game is the best-selling Mega Man title. Critics praised its audio, visuals and game play as an improvement over the first game. Many publications rank Mega Man 2 as the best title in the series, and as one of the greatest video games of all time. The game has been re-released on several consoles and mobile phones.