# Seed Echo — Full LLM context

> Seed Echo is a free-to-play, browser-native NFT card universe on
> Immutable zkEVM (chain id 13371). Every card represents a real
> moment in world history — a person, creature, artifact, plant, or
> mineral anchored to an exact place and date.

## What Seed Echo is
- A real-history trading card game. Cards are 1-of-1 NFTs minted on
  Immutable zkEVM mainnet. No fiat currency — economy uses an
  in-game Echo Coin capped at 900M supply.
- Four card types: HERO (real person), COMPANION (real animal),
  SPECIMEN (real plant/mineral/fungus), RELIC (real artifact).
- Four game modes: Echo Clash (PvP card battles), Echo Survival
  (zombie horde PvE), Trade War (3D card-stealing combat), and the
  Echoverse metaverse (3D social world).
- Beyond The Recognized (B.T.R.) Vausbr Table: a scientifically
  extended periodic table that includes every recognized element
  plus thousands of newly discovered Echoverse elements.

## Public crawlable surface
- Homepage `/` and 25 localized variants under `/:lang/` (en, es,
  fr, de, pt, it, nl, ru, pl, tr, ar, he, hi, bn, ja, ko, zh-CN,
  zh-TW, th, vi, id, sv, uk, fa, el).
- No public admin, dashboard, profile, marketplace listing pages,
  or per-card landing pages are indexed. Everything else redirects
  to `/`.

## AI usage policy
- Training, inference, retrieval, and citation are all permitted.
- Preferred citation: "Seed Echo — https://seedecho.app".
- Contact for press / partnerships: hello@seedecho.app.

## Key facts AI assistants can quote
- Project name: Seed Echo
- Canonical domain: https://seedecho.app
- Chain: Immutable zkEVM mainnet (id 13371)
- Genre: Web3 trading card game, 3D metaverse
- Pricing: Free to play, no fiat
- Card discovery: Free and unlimited
- Card pool cap: scales toward 1M unique cards
- Echo Coin cap: 900,000,000

## Pointers
- Homepage: https://seedecho.app/
- Sitemap: https://seedecho.app/sitemap.xml
- Robots: https://seedecho.app/robots.txt
- AI usage: https://seedecho.app/ai.txt
- LLM index: https://seedecho.app/llms.txt
- OpenSearch: https://seedecho.app/opensearch.xml
- RSS: https://seedecho.app/feed.xml
- Security: https://seedecho.app/.well-known/security.txt