Contents
- Our sportsbook and bonus mechanics
- Our sportsbook market coverage
- Our esports betting markets
- Our simulated sports and prediction markets
- Our advanced sports betting features
- What separates our games from the wider catalogue
- The studios behind our proprietary games
- Our sports leaderboards and prize structure
- Our licensing and operating structure
- Our support service
- Questions our support team can address
- Preparing a useful support message
- Following up on a Duel request
- Our approach to sports and games
- What our service offers UK players
- Our responsible gambling controls
Duel brings together slots, live dealer games, sports betting and esports in one place for players in the UK. Our strongest feature is the breadth of the sportsbook, which covers 31 sports, 25 esports titles and 24 simulated sports products. We also run our own 11-game Duel Originals suite and prize leaderboards worth $2 million each month. Our operating company is Immortal Snail LLC, licensed by the Government of the Autonomous Island of Anjouan, Union of Comoros.
Our site is designed for people who want the rules, market coverage and game details close at hand. You can browse slots and live tables through Duel casino, or work through our sportsbook, betting features and practical account information below.
Our sportsbook and bonus mechanics
Our sportsbook covers a broad range of traditional sports, esports and simulated competitions, with most of its volume coming from markets beyond the major leagues. The sports bonus system includes Comboboost, free bets, free-money credits and stake-refunded bets. T&Cs apply. 18+. New customers only. Please gamble responsibly (BeGambleAware.org).
Comboboost applies to eligible selections priced at 1.50 or higher. The boost rises as more selections are added: two selections receive 1.01, while a 20-selection combination receives 2.00. Cashed-out bets do not qualify, and system bets do not contribute towards bonus wagering requirements.
How our Comboboost progression works
A single selection does not receive a Comboboost multiplier. Adding selections progressively increases the boost, but each selection must meet the minimum odds and the bet must remain eligible.
| Selections | Comboboost |
|---|---|
| 2 | 1.01 |
| 5 | 1.05 |
| 10 | 1.20 |
| 15 | 1.45 |
| 20 | 2.00 |
Our other sports credits follow clear settlement rules. A free bet credits only net winnings because the original stake is not returned, while free money credits both the stake and the winnings. A bet no risk behaves like a standard bet, but your stake is refunded if the bet loses.
Our sportsbook market coverage
Our sportsbook covers 31 sports in total, giving you access to familiar team sports, individual disciplines, racing and several less common markets. Football, tennis, basketball and ice hockey sit alongside cricket, snooker, darts, golf, boxing, MMA and winter sports.
Our market list also includes rugby union, rugby league and rugby sevens as separate entries. You can cover futsal, badminton, volleyball, baseball, American football, squash, bowls, Aussie rules football and kabaddi without moving to a different sportsbook.
- Football, tennis, basketball, hockey and baseball
- Cricket, snooker, darts, golf and boxing
- Rugby, motorsport, cycling and winter sports
Duel also adds prediction markets for politics, arts, entertainment, science and sporting milestones. These sit outside the standard sports result format, so each prediction market has its own question and settlement condition.
Our esports betting markets
Our esports coverage extends to 25 named titles, giving you more choice than a conventional football-led sportsbook. The selection includes Dota 2, Counter-Strike 2, League of Legends, Valorant, Overwatch, Call of Duty and several battle-royale games.
Smaller titles are included too. Our market list covers King of Glory, Mobile Legends: Bang Bang, Wild Rift, Free Fire, PUBG, Fortnite, Apex Legends, Deadlock and Rainbow Six: Siege.
Further esports options include GeoGuessr, Marvel Rivals, Tekken, Street Fighter, Rocket League, Age of Empires, Starcraft 2, Standoff 2, FC 26, NBA 2K26 and Cricket 24. These markets sit within our 25-title esports range rather than counting each game mode as a separate title.
Our simulated sports and prediction markets
Our simulated sports range covers 24 eSports solutions built around virtual football, basketball, fighting, cricket, racing, tennis and several other disciplines. The catalogue includes eSoccer, eBasketball, eFighting, eCricket, eShooter, eHorse Racing and eTennis.
The virtual catalogue also includes eVolleyball, eBoxing, eKabaddi, eVaquejada, eMMA, eAmerican Football, eFootvolley, eTeqball, eIce Hockey and eTable Tennis. Individual variants such as eSoccer: Volta, eSoccer: Penalty and eSoccer: X-Battle FC remain separate markets.
Duel separates these simulated products from its named esports section. A bet on a virtual eBasketball event follows the virtual event's result and settlement rules, while a bet on a real esports tournament follows the conditions attached to that tournament market.
Our advanced sports betting features
Our sportsbook includes tools that change how a bet can be built or settled. Cash Out is available for both pre-match and live bets. Early Payout settles a bet as a winner when predefined conditions are met, irrespective of the final result, so the relevant market conditions determine when it applies.
Bet Builder lets you combine selections within a new bet. Our Combo and System bet formats can also work with Bet Builder, giving you more control over the structure of a multi-selection wager.
- Cash Out for pre-match and live bets
- Early Payout when market conditions are met
- Bet Builder with Combo and System bets
- Bore Draw refunds for qualifying 0–0 football matches
Bore Draw applies only to the football markets that carry the stated condition. A qualifying bet is refunded if the selected match ends 0–0 after full time.
What separates our games from the wider catalogue
Our games section centres on slots and live dealer games, with our own Duel Originals suite adding a proprietary collection alongside them. The Duel Originals range contains 11 games, each presented with a stated 100% RTP.
That RTP statement applies to the proprietary suite rather than every game available on Duel. Our wider gaming selection also includes slots and live dealer games, while sportsbook markets remain separate from both categories.
The studios behind our proprietary games
Duel develops its Duel Originals range in-house rather than presenting them as third-party studio releases. Our own suite covers dice, blackjack, plinko, crash, mines, keno, live castle roulette, video poker, rock paper scissors and limbo.
One game in the 11-title collection is live: Castle Roulette. The remaining games use formats that range from number-based decisions and instant-style rounds to strategy, card play and roulette. Our stated 100% RTP is attached to the whole Duel Originals suite, so it should not be applied to unrelated third-party games.
The in-house approach gives Duel direct control over the rules and RTP configuration of these titles. It also keeps the games visually and mechanically distinct from the broader slots and live dealer collection.
Our sports leaderboards and prize structure
Our leaderboards reward activity across slots and live games rather than concentrating on one game. We publish a $2 million monthly leaderboard alongside a $25,000 daily leaderboard, creating separate monthly and daily competition windows.
Because both leaderboards cover slots and live games, your activity is not tied to a single sports category or result format. The prize values differ by period, with the monthly pool carrying the larger headline figure.
| Leaderboard | Games covered | Prize pool |
|---|---|---|
| Monthly | Slots and live games | $2 million |
| Daily | Slots and live games | $25,000 |
Our licensing and operating structure
Duel is operated by Immortal Snail LLC, registered under number L22982. Our operating company is based at Arthur Evelyn Building, Suite 5, Main Street, Charlestown, Nevis, West Indies.
Our licence is held with the Government of the Autonomous Island of Anjouan, Union of Comoros, under licence number ALSI-202411026-FI1. The licence jurisdiction and registration details form the legal structure behind the Duel service.
Our UK-facing site serves players aged 18 and over. The 18+ restriction applies to both our games and sportsbook, alongside the responsible gambling controls described at the end of this page.
Our support service
Our support service is available by email through [email protected]. This inbox is the contact point for questions about our content, account processes and the information presented on this site.
Questions our support team can address
Our support team can help with account registration, deposits, withdrawals, bonuses, identity verification and technical problems. A clear description of the issue gives us the best chance of identifying the relevant part of the account.
Responsible gambling requests also have a dedicated Customer Support team. If you want to use a cooling-off period or self-exclusion, include the relevant request in your message so it can be routed appropriately.
- Account access and registration questions
- Deposit and withdrawal assistance
- Bonus mechanics and sports bet conditions
- Identity verification and technical issues
Preparing a useful support message
Include the email address attached to your account, the approximate date or time of the issue and any reference shown on screen. For a payment or bet-related question, the stake reference and market name make the message easier to follow.
For verification enquiries, name the document type and the stage you have reached without attaching sensitive identity documents to an unsecured message. Keep passwords and full payment credentials out of your email.
Following up on a Duel request
Our email support route requires you to keep the original message available for reference. If your account details change, send the updated detail in a reply to the existing thread where possible so the history stays together.
When writing to [email protected], avoid sending general gambling advice as a support request. A self-exclusion or cooling-off instruction can be handled directly by our Customer Support team.
- Write down the account email and the exact point at which the issue occurred.
- Send the request with the relevant account or bet reference.
- Keep copies of the email and any supporting screenshots for your records.
- Reply within the existing thread if our team needs another detail.
Our approach to sports and games
Our sportsbook and games sections work on different principles. A sports bet depends on the outcome of a selected event and its attached market conditions, while a slot or live game result is determined by its own rules and random number generation.
Sports markets also carry event-specific rules such as Cash Out eligibility, Early Payout conditions and Bore Draw refunds. A game’s stated RTP does not determine a sports outcome, and the sportsbook’s event coverage does not alter the rules of a live dealer game.
Duel keeps these formats distinct in its navigation. That separation makes it easier to check whether a market supports Cash Out, whether a sports selection qualifies for Comboboost and which rules apply to a live game.
What our service offers UK players
Duel combines an 11-game proprietary collection with sportsbook coverage spanning 31 sports, 25 esports titles and 24 simulated sports products. The sports side includes Cash Out, Bet Builder, Early Payout and Bore Draw, while the games side includes slots, live dealer titles and our own Duel Originals.
Our strongest practical features are the breadth of the sportsbook, the $2 million monthly leaderboard and the range of betting tools. Our Duel Originals range also stands apart through its stated 100% RTP, though that figure applies to those 11 proprietary games.
The responsible route is equally clear. You can request a seven-day cooling-off period or a self-exclusion lasting at least six months, and our support email can carry those requests directly.
Review our bonus and promotion terms, then choose the games or sports markets that suit the way you bet.
Our responsible gambling controls
Gambling should remain entertainment rather than a financial plan or an obligation. Duel is for players aged 18+, and our account controls let you pause play or close access to the service.
- Cooling off: a seven-day cooling-off period is available.
- Self-exclusion: your account is locked for at least six months and promotional material stops.
- Account support: our Customer Support team handles responsible gambling requests by email.
For a free and confidential self-assessment, visit GamCare or call the National Gambling Helpline on 0808 8020 133, available 24/7. BeGambleAware.org provides further information and support.
You can also use GamStop to self-exclude from licensed gambling sites, or install blocking software such as Gamban and BetBlocker. If you share a device with a minor, parental-control software such as Net Nanny or Qustodio can add another layer of protection.