Three tiers of odd and wacky shapes. Theres only one rule; you CANNOT delete/change any of the existing walls. You can rotate the plot, you can add walls to close in the area to make a room, and you can add more walls on the inside ect. Basically do whatever you want. You can also change the wall heights. Write in the description the hashtag #FOXpipSHELL GoodLuck!! :D I'll post my version in the gallery later. #threelevels #threetier #shellchallenge #hard #threefloors