Touhou Kisengun (Rare and Concealed Crowd) ~ Unstable and Unimaginable Power (東方稀濳群　～ Unstable and Unimaginable Power.) is a fan-made Touhou Project game made for the Hakurei Cleaning game jam by Team Magnitude Manipulators.

There is only one playable character for the main game: Reimu Hakurei, with two available shot types in the latest version. For the extra stage, Marisa Kirisame is playable with two shot types.

Gensokyo's inhabitants are behaving erratically, to the point of fairies looking at the sun directly and burning their eyes, as well as other species being born from the mysterious "power" that surrounds this land.
Because of this, our heroines set out to discover who is behind of this maniacal action, Reimu Hakurei heading one direction and Marisa Kirisame another.

Unstable and Unimaginable Power features original music in the style of ZUN, composed by Roka Enzaki, ElianTempest, Spooderboi and an unidentified composer, featuring art by Gwen, AuroraArtz, Tesumanda and Ryann1908.

This is the first western LuaSTG scripting engine-made fangame.