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Bullion Docs

What this is​

Bullion is an on-chain mining game on Robinhood Chain mainnet (EVM, chain id 4663). You buy rooms and miners with ETH, equip loadouts, and earn GOLD (ERC-20) from a shared mining pool.

Smart contracts: Solidity, UUPS upgradeable (BullionMine, GOLD token, miner badges).

Start here​

DocRead if you want…
Player GuideFull rules: rooms, tier gates, hash mult, fuel, earnings, FAQ
Mining SystemOverview of rooms, miners, loadouts, flow
Mining MathFormulas, tier gates, worked GOLD/day examples
Tokenomics21M supply, 14.7M mining pool, taxes, referrals

Core rule (rooms)​

Every room holds up to 8 miners. Low rooms accept only low-tier miners (e.g. Garage = T1–T2). High rooms allow stronger miners and a higher permanent hash mult (up to 2.00× on Space Station). Fuel (GOLD) adds temporary 2×–5× on top.

Network​

  • Chain: Robinhood Chain mainnet (4663)
  • Wallet: Any EVM wallet with ETH for gas + shop
  • Mine app: mine.bulliondotfun.com
  • Contracts: GOLD 0xc665…3750 · Mine 0xDAac…04e1 · Miner1155 0x6Ee2…147a · Hook 0x25Ee…00Cc (full list in Player Guide and contracts/MAINNET.md)