Draw your house
Your house is a blueprint you can change completely: draw any floor plan, split it into rooms with walls and doors, add windows, stairs and new floors. Every change is priced in points before you build, and you see it built live in the game's look.
Drag to draw, or tap. Floor and Carve take rectangles, walls follow grid lines, doors and windows go on edges. A dashed line shows the floor below; orange hatching is floor over thin air.