Tower Builder is a building and design game. The main goal is to build the biggest tower while not going bankrupt. This is an engineering and cost management game. The beams, columns and floors have structural properties. The plan for this game is for either single player or multiplayer in three modes. • Challenge mode: you play the role of a Developer, Engineer and Builder with limitation in place. You have to strategize to construct the tower tall and strong enough that the it does not collapse without going bankrupt. • Free Build mode: you have no size limit and unlimited funds, but the tower has structural properties. • Sandbox mode: you can build and decorate as you like.