Moto Racing Game Jumps Races

One prompt that makes AI build a complete motorbike racing game as a single HTML file: behind-the-bike 3D view, rival riders, three-lap races, ramp jumps with four tricks and combos, nitro boost, coins, garage upgrades, three difficulty levels and a 4-event campaign with night and rain. Synthesized engine sound, no assets or libraries. Works on laptop and phone. Includes a playable demo and variables to change the theme, bikes and tracks.