Rozen Diadem

Developer: 15citron (Ichigo-Citron)

Year: 2009

Platforms: PC, physical release

Medium: danmaku / bullet hell

Engine: Tonyu

Rozen Diadem is a bullet hell game made by 15citron over several years based on the Rozen Maiden franchise. You can play as Shinku or Suigintou where you both compete in the Alice Games, defeating the other dolls over a series of 8 stages. If either girl runs out of health, the game immediately ends.

screenshot of Rozen Diadem's Stage Clear screen

every doll (outside of Shinku and Suigintou) is a final boss at the end of each stage.

the game is pretty short with the total playtime being 20~ minutes on easy (with easy, basic, hard, and mirage as difficulty levels), but it was very pretty to look at and worked nicely. an exe (which I played) is available on the developer website.