Gensou Shoujo Taisen Kou: Fantasy Maiden Wars Scarlet

幻想少女大戦 (Gensou Shoujo Taisen, "Fantasy Maiden Wars") is a four-part Touhou Simulation RPG game based on Super Robot Wars. All four parts have been released, and patches are currently being released for the last game.

The first part, E (紅 Kou, Scarlet), is based on the plot of Embodiment of Scarlet Devil (Touhou Koumakyou), featuring all characters from that game and some others. The story includes two overlapping routes for Reimu and Marisa, with an unlockable Sakuya route added in the v1.10 patch.