# Seed Echo > Free-to-play, browser-native trading card universe where every card is a real place, person, creature, or artifact pinned to the coordinate and date it belongs to. Gasless mints on Immutable zkEVM, zero fiat, zero downloads. Seed Echo is developed by B.T.R. Vausbr. Cards are discovered from real-world geolocation, minted on the Immutable zkEVM mainnet, and traded in an internal Echo Coin economy capped at 900M. Seed Echo is in a pre-launch lockdown: only the pages listed below are reachable without an account. Gameplay, card, element, learn, isotope and dashboard surfaces require sign-in and are not publicly available. ## Pages - [Home](https://seedecho.world/): Overview and entry point. - [Sign in](https://seedecho.world/auth/app): Sign in or create an account. ## Optional - [Terms](https://seedecho.world/terms/app): Terms of Service. - [Privacy](https://seedecho.world/privacy/app): Privacy policy. - [DMCA](https://seedecho.world/dmca/app): Copyright takedown policy.