Touhou Artificial Dream in Arcadia

Sumireko Usami is not a normal high-schooler at all. She is so abnormal that even the fantasy land of Gensokyo considers her an anomaly. Truth is, she can visit Gensokyo in her dreams!

A new incident has occurred, and Gensokyo has a clone problem

Artificial Dream in Arcadia is a first person dungeon crawler where the player, as Sumireko, has to navigate tricky mazes and capture a party of the strongest Touhou characters to assist them in turn-based battles.