Every number in our Duel Casino review comes from a repeatable test, not a press kit. This page documents the full methodology, so you can judge our work — or replicate it.
1. Real-money testing
We maintain a funded Duel account and test with our own crypto: deposits from the $5 minimum across BTC, LTC, SOL and stablecoin rails, and 25+ withdrawals timed from click to on-chain confirmation (median under 3 minutes in our latest cycle). We never use demo balances for payment claims.
2. Fairness verification
For Duel Originals we recompute outcomes from the published server seed, client seed and nonce through SHA-256, and check Crash rounds against the decentralised drand beacon. If a result ever failed to reproduce, that would be the headline of this site.
3. Licence & operator checks
We verify the Anjouan Gaming licence (ALSI-202411026-FI1), the operating entity Immortal Snail LLC (reg. L22982) and the published legal terms, and we re-check them on every update pass.
4. Scoring
The overall 4.4/5 is a weighted average of four pillars we score independently: Trust & Fairness (4.3), Games & RTP (4.6), Payments & Speed (4.4) and Bonuses & Rakeback (4.1). Weights favour trust and payments, because a casino that pays slowly or obscures its edge fails at the only things that matter.
5. Updates & corrections
We re-test monthly and after every major Duel release (Zero Edge changes, new Originals, policy updates), and we date significant revisions on the page. Found an error? Tell us via the contact page — verified corrections are published, not buried.
Affiliate links may earn us a commission. They never affect scores — see about us for the full disclosure.