Make a 3D open-world crime city game in one web page: a sunny coastal city with downtown towers, palm-lined streets, a beach and a harbour, with traffic and people walking. You play on foot in third person: WASD to move, mouse to look, Shift to run, Space to jump, click to punch. Press F near any car to steal it and drive it, F again to get out. Crashing into things causes police attention: a wanted level with police cars that chase you. Add a minimap, a wanted-stars HUD, a money counter and a short mission to start. It should feel fun the moment it loads.