here's a hardcore 20-room shell for James Turner's new EveryRoomIs OneTileBigger Challenge for those in need of some difficulty. Keep in mind that I allow you to change the wall height of each individual wall as long as you do not delete or add any wall. You'll have to delete those lights and replace those ugly floor patterns. #jamesturnerchallenge #jamesturneryt #shell #EveryRoomIsOneTileBigger #EveryRoomIsOneTileBiggerChallenge #ERIOTBChallenge #challenge #hardcore