Magical Battle Arena

Magical Battle Arena is a doujin game created by Fly System which features characters from Magical Girl Lyrical Nanoha and a number of other series, as well as some original characters. The game has had two major patches, Lyrical Pack and Complete Form, with minor patches released regularly. It is believed to have been an influence on the later Magical Girl Lyrical Nanoha A's Portable: The Battle of Aces. Touhou Sky Arena by the same creators can be considered a spiritual successor.