Four things apply here that do not apply at fiat casinos.
The minimum withdrawal can exceed the cap. If the cashout cap is 20 and the minimum withdrawal on the available coins is more than that, the winnings cannot leave the account at all. Reported minimums vary widely, from around $10 at Betpanda to a reported 0.002 BTC at Lucky Block, both from secondary sources rather than official pages. Check the minimum against the cap before playing, not after.
Network fees eat small payouts. A capped amount withdrawn on an expensive chain can lose a noticeable share to the fee. Where the operator supports several networks, the choice of chain matters more on a small balance than on a large one.
A volatile balance moves the target. If the operator holds your balance in a volatile coin rather than a stablecoin, both the wagering target and the cap can be denominated in something that changes price while you are working through it.
Sweepstakes sites are a different legal model with their own rules. Stake.us runs on Gold Coins and Stake Cash rather than deposits, and its official help centre states a 3 times playthrough on free Stake Cash before it can be redeemed, with a reported minimum redemption of 40 Stake Cash. Several states have moved against sweepstakes operation in 2025 and 2026, among them California, Connecticut, Indiana, Louisiana, Maine, Montana, Nevada, New Jersey, New York, Oklahoma and Tennessee. Regulated online casino, a separate category, currently exists in Delaware, Michigan, New Jersey, Pennsylvania, Rhode Island, West Virginia, Connecticut and Maine. Our US crypto casinos and sweepstakes casinos pages cover the distinction.
One jurisdiction note. In France the ANJ does not authorise online casino games at all, and the loi du 9 juin 2023 prohibits influencers from promoting unauthorised gambling offers, which is why no-deposit codes circulating on French-language social accounts are advertising something that has no French licence behind it. Support is available from Joueurs Info Service on 09 74 75 13 13, and /responsible-gambling lists the tools worth setting up first.