Place upright girders and connect with horizontal girders. Then attach wall panels add floor / roof tiles to create buildings. Chose from a variety of wall panels, window styles, and floor tiles. Build one of our 12 sample models (of increasing difficulty) or try making your own. Share with your designs with your friends via an email or text message. The thumbnail image includes the necessary data to reconstruct the building on your friend’s copy of the game. If your friend makes changes he can Share them back with you. Optionally shares your accomplishments with email, or text messaging. Runs on Windows 10/11 PC with mouse or touchpad controls.