Thanks to fly-system, the doujin game Magical Battle Arena was released at comiket this year. A quick run down of the game before I get into how you install and what you should need to know.
The game, as the title implies, concentrates on well… Magical Battles in an arena (lol….). But in all seriousness here. The game is a third person fly-and-shoot kind of game. Featuring characters from series such as Nanoha and Fate from Mahou Shoujo Lyrical Nanoha or Sakura from Card Captor Sakura. Controls would feel similar to those who play third person mech piloting games like A.C.E. or Armored Core.
UPDATE: Due to the most recent comiket, a new expansion has been released. This guide will contain revisions to accommodate for the new expansion Lyrical Pack. The expansion adds 3 more playable characters, all of whom are from Mahou Shoujo Lyrical Nanoha. They are as followed: Yagami Hayate (pre-StrikerS), Vita, and Takamachi Nanoha (StrikerS). Aside from this, it also add new play modes, desktop wallpapers for beating mission modes, a few new stages, combo system changed/improved, and the likes.