Gundemoniums, originally known as Gundemonium, is a bullet hell shooter game initially released in the mid-2000s for PC. It received an updated version for the PlayStation 4, which not only enhanced its visuals and audio but also introduced additional gameplay elements and challenges. The game is set in an alternate universe during the 18th century where magical technology has vastly progressed. Players navigate through intense shoot 'em up scenarios, facing swarms of enemies and formidable bosses. The genre is characterized by rapid-paced action and a high difficulty level. It is known for its anime-style artwork and retro-inspired soundtrack, attracting both fans of classic shooters and those who appreciate modern remixes of the genre.