3D Crowd Runner Game Builder

One prompt that builds a complete 3D crowd-runner game in a single HTML file: steer a growing crowd of cute characters through + and x gates, obstacles, enemy crowds and boss fights. 100 levels across 5 worlds, a shop with upgrades, skins and trails, daily rewards, missions, achievements, touch controls and an autoplay mode for trailers. Works offline, ready for itch.io, CrazyGames or Poki. The demo game was built from this exact prompt plus one short follow-up.