Playground

One slider set: a city, a circuit, or a street race through the city

This is the live street generator that ships in @jgengine/core, rendered in full 3D: streets, frontage building lots, a sealed-off racing lap. The three buttons are presets over the same dials — a city and a race track are opposite corners of one space, and a street race is a section of the city with barriers dropped in. Every drag regrows it deterministically — same seed and sliders, same world, in the browser, in the editor, and in a shipped game.