Since 1995, the sole member of the group, Jun'ya "ZUN" Ōta, has independently developed and self-published the Touhou Project, a bullet hell shoot 'em up series, as well as collaborated with other circles to produce related print works and music albums.

[55] In 1995, he began developing a series of bullet hell video games under the name "ZUN Soft" while studying mathematics at Tokyo Denki University.

He is credited in the production of several titles:[citation needed] During this period, he contributed soundtracks to several games developed by his junior classmates in Amusement Makers, notably the Seihou Project (西方Project, Seihō Purojekuto, lit.

[61] The game uses the same engine as Mountain of Faith and shares many similar gameplay features, including a "Beer Gauge" that increases shot power based on damage dealt.

In addition to the Touhou Project games, ZUN has provided writing for several official Touhou Project print works, produced in collaboration with various illustrators and publishers: The releases of Bohemian Archive in Japanese Red, Perfect Memento in Strict Sense, Strange Creators of Outer World Volume 2, and The Grimoire of Marisa were accompanied by bonus CDs containing arrangements and compositions by ZUN.

), in which he discusses his favorite locations for food and beer, his daily life, game development, and topics related to the Touhou Project.