A fluid dynamics messy piece

Each edition generates a trapped city flying through space. To liquify the buildings, move your mouse over them, and use the buttons at the bottom to shape the city by adding or removing buildings, sky taxis, cars and trees. Hold the buttons down for a more speedy edit.

If you're lucky enough to get a special FX of (f)ireworks, (l)ightshow, (m)eteors or (w)arpspeed, then type the appropriate key to stop/restart the effect.

Made with p5.js