Batsugun

Batsugun is a "bullet hell" shooter developed by Toaplan and Gazelle. After a 1993 arcade release, it was ported to the Sega Saturn and released exclusively in Japan in 1996. The game is considered the pioneer of the bullet hell genre; its designers would move on to form Cave, one of the leading developers in the genre.

You can choose one of three pilots; each pilot has a ship with a different attack range/frequency. Each ship has three forms, based on the experience points collected.You power up gradually by collecting P icons and by destroying enemies which grant experience points, an unusual design for a shooting game; dying takes away a certain amount of power but gives you a free P icon. After fully powering up, gathering further experience points adds bombs and restores the ship's hitpoints.