RM Using the included circuits and modular pieces, girls can construct a customised, cozy townhouse for their dolls by creating a working doorbell, spinning fan, elevator, or whatever their imaginations can dream up. The Townhouse set is compatible with rPower (not included and sold separately) so girls can control their moving creations using the Roominate app from a phone or tablet. Connect wall and floor panels to build your structure. Use the modular building pieces to create spiral staircases, couches, pools, and so much more! Wire up the motor circuit to make a spinning windmill, blender, pottery wheel, carousel, elevator, or anything else you can imagine! Teaches important STEM skills: hands-on problem solving, spatial and fine motor skills, self-confidence, and creativity. Compatible with all other Roominate products and encourages open-ended play for endless possibilities. Included in this 121-piece set are 4 pluggable wall/floor panels, 52 furniture building pieces, 40 connectors, 12 columns, 2 wheels, 2 axles, 1 motor, 1 battery pack, 1 screwdriver, 3 sheets of stickers, 1 sheet of wallpapers, and 1 doll and pet. Requires 2 AAA batteries, not included.