Rules

1. Press Start. The game commits now and reveals after a future block is ready.
2. First card appears. Choose Higher or Lower.
3. If you’re right, your multiplier increases. Keep guessing or Cash Out anytime.
4. Ties lose (same rank). Deck is seed-shuffled; draws are without replacement.
5. Every action is a transaction. Winnings go to your pending balance in the contract. Withdraw when you want.

Fairness: Seed mixes a future blockhash with prevrandao. Frontend can’t peek or reorder.