How The Crawler Cookbook works

1. Find a marked book in the wild — Little Free Library, cafe, friend, airport bench. Finding the book is the only way to check in.
2. Open it. Inside the front cover is a sticker kit with a QR code (and a printed claim code backup). Scan the QR — or type the claim code — to prove you found the physical copy.
3. Create an account from Sign in anytime — a handle and an email. The dungeon assigns a number like C-00042 and a personal space. You can also create one the first time you check in a found book. Returning: sign in with email + number.
4. After you check in, that copy's party history unlocks for you. Between finds, party up with other crawlers, chat on party/guild walls, and visit each other's spaces.
5. Between finds, grind the 18-floor crawl. Solo, party, and guild each have XP pools. Most crawlers never see Floor 12. Floor 18 is damn near impossible — first arrival wins celestial glory.
6. Want to plant a new copy? You do not need to find one first. Sign in or create an account, open the kit, pick a volume, fill the first entrance, preview the print sticker (neon accents per book on white paper), generate codes, cut it out, and glue it inside the front cover. Planting unlocks an achievement and lets you track who finds your copies.
7. Parties can band into guilds. Write your name, crawler number, and entrance in the physical insert, then send the book on for the next crawler.

Knowing a public copy URL alone cannot unlock a journey. Crawler numbers are assigned by the system — never invent your own.