Coin

Stake once, then call the sun or the moon. Every call that lands doubles what the round is worth; one that misses ends it at nothing.

Bank the streak whenever you like — but not before the first call lands, because until then there is nothing to bank. The coin is fair either way: the side you name changes the show, never the odds.

A round runs until you bank it, you miss, or it reaches the limit set for it. That limit depends on your stake: a larger stake reaches fewer calls, so the payout stays inside the table maximum.

Winnings are rounded down to the smallest currency unit (e.g., one cent).