By learning from the playful connections between desire and time pressure in Amsterdam’s city growth in golden age, FloCity simplify the economic mechanics of energy flow. The way of digging freeform canal networks for run-time AI shipping provides unique perspective and experience for city builder. Cities grow by reforming shorelines, smoothing AI traffic flow, developing plots around the busy ports.Start canal puzzle...AI ships transport resources from the sinking donut to the inner ports of the hungry cities. Digging efficient canal network is like solving puzzles for smooth AI traffic. Build adventure...Urban-scale valves interact with AI ships, including transformable architectures, changeable corridors, falling sculptures, and more!Driving economy by AI cargo ships...FloCity creates a run-time energy loop for growing cities: canal digging for AI ships - accelerating traffic - busy ports - boosting land value around the ports - rising skylines - traffic jams - canal digging… The challenge is to build enough houses before the resource island sinks.From citizens’ perspective...A variety of minimalist architectures can be generated, from Mediterranean to Kyoto, from Soviet cities to space. After fast-forward city growth, FloCity provides relaxing inner space of yacht, airship, and space capsule for urban meditating.The sinking donut reminds us to rethink the relationship between desire and speed of resource consumption. FloCity is about energy, mass and time.