3D Stunt Bike Physics Game Builder

Build a polished 3D stunt bike physics game (trials style) with Claude Code: one offline HTML file with its own 2D physics engine and WebGL renderer, no libraries. Ride ramps, gaps, loops and TNT across 12 levels, land backflips for time bonuses, chase 3-star times and race the ghost of your best run. Includes 6 unlockable bikes, a level editor with share codes, touch controls, synthesized sounds, saves and a built-in self-test. Set the name, theme, rider, bikes and colors.