Dead Hour 3D Zombie Survival Builder

Build a 3D zombie survival roguelite with one prompt. Get a complete game in a single file that runs in any browser: a soldier with a flashlight, human zombie hordes, rain, fog and lightning, boss fights, 4 weapons (rifle, grenades, flamethrower, drones), level-up upgrades and a permanent upgrade shop. Works on desktop and mobile touch. Customize setting, enemies, run length and difficulty. No downloads or art files. Works with Claude Code, Cursor and Codex.