Pachukon Defend the library! (ぱちゅコン Defend the library!, lit. "PatchCon Defend the library!") is a real-time strategy game where the player must choose 5 Touhou characters to create an army from and defend Patchouli's library from swarms of oncoming attackers that are after the books. Unlike most RTS games, PatchCon is single-player only, and all lost units will respawn after a short delay (delay varies between characters).
Being unable to bear the frequent raids by Marisa,
Patchouli Knowledge was determined to strengthen the defenses of the library.
Faithful and strong soldiers were needed in place of the worthless maids.
With that thought in mind
Patchouli set into order the manufacturing of golems
which when infused with the hair of certain proprietors
successfully took both their form and abilities.
At that time, protection of the library was supposed to be certain...
Except someone had stolen the clay doll manufacturing process
and most of the Scarlet Devil Mansion has been over-run by these rival dolls.
Patchouli, using the dolls she has created,
stands now to defend the last stronghold which is the library.