Capcom recently released the totals of sales statistics for their major franchises as of September 30th, 2009. So, how does the good ol' Blue Bomber stack up?
Mega Man tied 2nd place with the Street Fighter franchise with an astounding 28 million units sold since the series' inception in '87. However, when it comes to to titles in each franchise, Mega Man trumps all with 125 games. Of note, this number includes re-prints, and multiplatform releases.
Complete data available at Capcom's Investor Relations page