It is part of the anniversary project to celebrate the Kamen Rider franchise's 45th anniversary, and will feature characters from both all Showa Rider TV series, Kamen Rider Drive and Kamen Rider Ghost. The game features an original story where the evil Shadow Moon, rival of Kamen Rider Black makes the first monsters each Kamen Rider has faced much stronger, killing him and other Kamen Riders before they truly have a chance to become heroes. (wikipedia.org)