From version 1.3, the first time the app opens it creates an anonymous online account for you automatically. No name, email, or password is asked for. The account lets our servers keep your progress, check that game actions follow the rules, and restore your progress on another device if you link a sign-in method.
Our servers run on Cloudflare (Workers, D1, Durable Objects, and R2), and your account data is stored in the United States. For your account they store: an account and player identifier; session tokens; your game state, including the collection, card levels and mutations, packs and DNA, daily rewards and quests, achievements, profile (nickname and avatar), combat deck, battles and expedition progress, season pass progress, titles and frames; the history of game actions the app sends, with their time and your device’s time-zone offset; and the app rules version. To deliver and protect the service, Cloudflare also processes technical request information such as IP address, time, and user agent.
The app keeps a copy of your progress and any actions not yet sent on the device so you can play offline. When you reconnect, the server checks those actions within a limited offline window; actions it cannot accept are discarded and the app adopts the server’s version of your progress.