yep. if you lay down an apparently blank tile, it might be masked.

go to the top right corner of the building window. there are two buttons, "events" and "masks". if you click "masks", everything that jazz can land on turns black. everything that jazz can't land on (i.e. background tiles) disappears. click masks again to go back to normalcy.

wow. i actually gave advice.

there's something wrong with me. shoot me before it gets any worse.