KEYSTONE 404 Freeplay Bridges Plus 328-Day Bank Architecture

KEYSTONE contains 404 freeplay bridges alongside a 328-day daily bank, with 3 puzzles per day. The architecture bakes all puzzle data into the embed.js file, eliminating runtime network requests. The game uses a word-bridge mechanic where players connect words through intermediate steps. The install page shows two live demos with the actual daily puzzle.