Themed Arcade Shooter Game Builder

Build a complete vertical-scrolling arcade shooter in any theme from one prompt: space, deep sea, candy land, whatever you name. Five enemy movement patterns, a boss every fifth wave, power-ups with timers, particle explosions and screen shake, synthesized music and sound, keyboard and touch controls, and a saved top-five scoreboard. Includes an autoplay mode for recording trailers. You get one offline index.html that runs on phones and desktops. Tested with Claude Code.