Mega Man 2 (?????2 Dr.?????? ,Rockman 2: Dr. Wily no Nazo?, Rockman 2: The Mystery of Dr. Wily) is a platform game developed and published by Capcom for the Nintendo Entertainment System. It is the second installment in the original Mega Man series. The game was released on December 24, 1988 in Japan, and later in 1989 and 1990 in North America and Europe, respectively. Mega Man 2 continues the titular protagonist's battle against the evil Dr. Wily and his rogue robots. The game features several graphical and gameplay changes from the first Mega Man game, many of which have remained as elements throughout the series.
Although sales for Mega Man were unimpressive, Capcom allowed the Rockman team to create a sequel. With more than 1.5 million copies sold, the game is the best-selling Mega Man title. Mega Man 2 has received high praise by many publications as the best title in the series as well as one of the greatest video games of all time. Mega Man 2 has been rereleased on several consoles and has most recently made its way to mobile phones. It was released on the Wii's Virtual Console in Europe in December 2007, in Japan on August 26, 2008 and in North America on September 15, 2008.