Similar to a shell challenge, you can't change the existing walls that are placed on the lot. You can't move them. You must connect the walls together to create your own shell and turn it into something awesome! You can add addtional rooms, balconies, patios, etc. You can change a wall to a fence or sprandal, but you can't delete the walls that are there. Have fun!! (not my original idea) #katertotforlife #connectthedot #shell #twitch