Layout It is a puzzle game. The purpose of the game is to fill square cells with two kinds of items and construct the rooms with the specified area. The two items are the blocks, which the wall is made of, and the floor panels, which the room is made of. Put a block or a floor panel and keep three constraints. These rules are same as those of the Nurikabe puzzle which is invented by Nikoli (a famous puzzle magazine publisher in Japan). There is also the function to make a puzzle by yourself.