Infinite Blade Pavilion
The game was first announced on July 5, 2019 in a "Kaisendo Direct" video alongside the Extra update to Hollow Song of Birds. The initial v0.1 trial, containing the first three stages, was released two days later on July 7, 2019.
Gameplay revolves around a combination of factors: a "Skill Tree" similar to that of Mystical Power Plant that increases by collecting leaf items, special attacks that can be used by consuming Skill Tree levels, and a "tension gauge" that increases or decreases the amount of items dropped by enemies.
Written by Gagawa Ichi (who also designed the characters for The Last Comer, Mystical Power Plant, Riverbed Soul Saver, Book of Star Mythology, and Hollow Song of Birds) the plot revolves around the energy of autumn mysteriously draining out of Gensokyo into the Underworld, where the Palace of the Earth Spirits has been taken over by mysterious intruders.
Infinite Blade Pavilion features original music in the style of ZUN, composed by a cast of musicians such as Hishimottie, Monday, Mace, Ichita, khirio, Yoko Yasha, and NED.