The McM is on the bottom floor in the library. You can click on the mcm if you have the library card.
The library card is in Mordred's house museum.
if you mean in astro knights, the mcm is in the library in the castle
McM
it is McM
you click on the paper under mcm
you have to go to the non- fiction section and click on McM!!
under the library, you click on the McM label and stairs appear
Its behind the McM thing I cant click it -----{---@ YOU SUCK LOLOLOLOLOLOLOLOLOLOLOLOLOL
McM is the shelf label for the lower aisle of the castle library. If you have the Library Slip, you can press this shelf to open the dungeon passageway.
Go to the library and then there will be a sign that says McM. Click on it and you're in!
in the castle library click mcm in the non-fiction section to get into the dungeon
The library SLIP is marked "Non-fiction McM", which is the lower aisle in the library. Press the spot on the shelf marked McM.
The dungeon appears if you click McM, after you got the library slip from Mordred's House/Museum. You can get the coin from the fountain, where it is shining.