Ultimate Fatal Octopus

Ultimate Fatal Octopus is a Touhou Project fan-made shooting game and a collaboration with Vtuber Syrena. Reimu and Marisa attack a suspicious pink UFO that appears in Gensokyo, unaware that its owner is Sirena, an alien passing by. After the UFO is damaged, a spell card duel begins.

Stage and UFO system

The game has one stage, about as long as a Touhou Ex Stage, and four difficulty settings. It recreates the UFO system from Touhou Undefined Fantastic Object, but UFOs come in only one color, so you cannot collect the wrong one by mistake.

Characters and shot types

You can choose between two main characters and four shot types. The game also has a danmaku engine designed for better performance, plus a Steam leaderboard and anti-cheat. Auto dodging is available if Project Beril is in your Steam library.