: High difficulty but potentially the strongest, with a very fast rate of fire and powerful close-range special attacks.
: Features a wide range but slow rate of fire. eXceed – Gun Bullet Children
: A "graze" mechanic rewards you for letting bullets pass close to your hitbox, which helps charge your special attacks. : High difficulty but potentially the strongest, with
is often viewed as a solid, if dated, entry-level bullet hell (danmaku) shooter that serves as a foundational step for developer Flat Software. While it establishes the series' core mechanics, critics and players generally agree it is the weakest installment , largely overshadowed by its more polished sequels, Vampire REX and Jade Penetrate Black Package . Core Gameplay & Mechanics is often viewed as a solid, if dated,
The game follows three "Gun Bullet Children" fighting a war against vampires and "deviants".
Reviewers from platforms like Real Otaku Gamer and the Steam Community highlight several recurring pros and cons: