I finally beat Level 33 with no house losses, and I have a feature request for being able to wait a turn without doing anything, on purpose - the last infected tile was an Ocean, and thus indestructible.
Oh, I might've confused this with another ocean-tile related issue that I already addressed in the Steam version.
In this case, the game will automatically skip your turn if you cannot do anything, although this is not very intuitive because it might require you to make any action even if that action is not necessary, in order for it to trigger.
I'll definitely look into improving this, thanks!