Duel vs Gamdom: two zero-edge casinos compared
Duel and Gamdom are the two best-known crypto casinos advertising 100% RTP on their in-house Originals. With the headline odds level, the choice comes down to rewards, payments, track record and the small print behind each zero-edge promise.
Duel vs Gamdom side by side
| Duel | Gamdom | |
|---|---|---|
| Launched | 2025 | 2016 |
| Operator | Immortal Snail LLC (Nevis) | Moon Revolution Limitada (Costa Rica), as reported |
| Licence | Anjouan | Anjouan (previously Curaçao) |
| Originals house edge | 0% within a published daily allowance | 0% advertised on all Originals since December 2025; no conditions published in the announcement |
| Originals | Dice, Crash, Plinko, Mines, Blackjack, Castle Roulette | Crash, Dice, Mines, Plinko, Roulette, Keno, Hi-Lo and more |
| Rakeback | Instant, no wagering | Instant, weekly and monthly rewards; 24 Royalty Ranks |
| Welcome offer | None (referral offers vary) | No deposit match; first-week rakeback boosts via promo codes |
| Game library | Around 1,000+ slots, live casino, sportsbook | 8,600+ games from 60+ providers, live casino, sportsbook, esports |
| Payments | 16 cryptos; card and e-wallet deposits via partner | Crypto plus fiat in 13 currencies, depending on country |
| KYC | Not by default; can be requested | Tiered; reported basic check after about $2,000 in deposits |
| Withdrawals | Crypto, usually minutes | Crypto, reported minutes; deposit must be wagered once |
Zero house edge: same headline, different detail
In December 2025 Gamdom announced that all its Originals, including Crash, Dice, Mines, Plinko, Roulette, Keno and Hi-Lo, now run at 100% RTP. Duel has advertised the same for its Originals since launch. On the headline number, the two are level, and both beat the roughly 1% edge at Stake.
The difference is in what is published. Duel explains that zero edge applies within a daily allowance of eligible wagering, shown in your account. Gamdom’s announcement did not state any cap, limit or end date. Neither should be read as a guarantee: check the in-game info panel for the live RTP before you play, on both sites.
That gap applies when comparing either casino with a 1% site. Between Duel and Gamdom, the expected cost on Originals is the same while both stay at 100% RTP.
Rakeback, VIP and bonuses
Duel has no VIP ladder. It pays instant rakeback on slots and live casino with no wagering, runs a monthly leaderboard, and gives rotating offers to players who join through a referral link such as JuicyReferrals.
Gamdom is more of a classic loyalty casino: rakeback paid instantly, weekly and monthly, 24 Royalty Ranks with boosts at higher tiers, cashback on net losses, an invite-only VIP club with a manager, and a VIP transfer program. Reviews note that rakeback does not build up while a deposit bonus is being cleared.
Remember that rakeback on a zero-edge game is zero by definition, at both casinos. Rakeback matters for slots and live tables, where the provider’s edge still applies. Our rakeback guide explains the maths.
Payments, withdrawals and KYC
Both pay out crypto in minutes. Gamdom is stronger on fiat, with deposits and withdrawals in 13 currencies through payment providers where available. Duel takes card, Apple Pay, Google Pay and local methods for deposits, but withdrawals are crypto only; see our Duel payments review.
On KYC, Duel needs only an email at sign-up but can ask for documents before a withdrawal. Gamdom uses tiered verification, reportedly from around $2,000 in deposits, and its terms require a deposit to be wagered once before withdrawal.
Licence, track record and availability
Both hold Anjouan licences, which offer limited player protection compared with regulators like the UKGC or MGA. Gamdom has operated since 2016 and reports more than 16 million registered users; Duel launched in 2025 and has drawn more controversy, including a lawsuit from X Corp. against its operator.
Both block many countries. Gamdom reportedly restricts 38 jurisdictions, including the US, UK, Australia and most of the EU; Duel restricts the US, UK, Australia, Germany, the Netherlands and France among others. Check the terms of each site and never use a VPN.
Duel or Gamdom: which should you choose?
- Choose Duel if you want a clearly explained zero-edge allowance, rakeback without wagering, the monthly leaderboard and 1v1 games in Duel Arena.
- Choose Gamdom if you want a long track record, a VIP ladder with cashback, fiat payments or the biggest possible game library.
See how both compare with the rest in our crypto casino comparison, or read Duel vs Stake, Duel vs Shuffle and Duel vs Rainbet.
Affiliate disclosure: DuelClub may earn commission if you register through our link. It does not change what you pay or how we write. See our methodology. 18+ only.
Sources and review notes
- Gamdom 100% RTP announcement (Decrypt, press release)
- WorldPokerDeals Gamdom review
- Tech Insider Gamdom review
- Duel: The Power of Zero Edge
Facts and offers can change; Duel’s own terms take precedence.