Reggie Fils-Aime announced that the titles were slated for release on the 3DS and would possibly use the 3DS' features, such as 3D effects, analog control, or camera support.
Spider-Man | Isle of Man | Man Ray | Iron Man | The Six Million Dollar Man | The Music Man | The Third Man | The Invisible Man | Isle of Man TT | Half Man Half Biscuit | World's Strongest Man | The Man from U.N.C.L.E. | Rain Man | MAN SE | Burning Man | Pac-Man | Beenie Man | Mega Channel | Man Booker Prize | Douglas, Isle of Man | Mega Man | The Man Who Came to Dinner | The Amazing Spider-Man | Man of La Mancha | The Old Man and the Sea | Spider-Man (2002 film) | Cinderella Man | Blue Man Group | Ultimate Spider-Man | The Man with the Golden Gun (film) |
These are the first seven bosses: Mike Tyson; Mecha Birdo; Dracula; Kraidgief (a parody of palette-hacked character glitches); Mother Brain; Bowser, Wart and Dr. Wily in the Koopa Klown Kar; and a mix between the Mecha Dragon from Mega Man 2 and the Yellow Devil from Mega Man and Mega Man 3.
According to its producers Keiji Inafune and Hironobu Takeshita, the development team intentionally made the graphics, sound, and gameplay of Mega Man 9 as simple as possible to adhere to the likeness of the fan and critical favorite Mega Man 2, released in 1988.