東方怪綺談 ("Touhou Kaikidan") ~ Mystic Square
("Fantastic Eastern Tales of Romance")
For no apparent reason, demons and youkai overran Gensoukyou once more, this time from a cave leading to Makai. Hakurei Reimu, Kirisame Marisa, Mima and Kazami Yuuka, each with their own agenda, decide to enter the cave in search of the root of the problem.
The game also marks the first appearance of Alice Margatroid, Stage 3 and Extra Stage Boss and later a recurring playable character for the Windows generation.
- Stage 1 Boss: Sara
- Stage 2 Boss: Louise
- Stage 3 Boss: Alice Margatroid
- Stage 4 Boss: Yuki and Mai
- Stage 5 Boss: Yumeko
- Final Stage Boss: Shinki
- Extra Stage Boss: Alice Margatroid