One Casino runs promotions every week for both new and existing players. Weekly slot tournaments feature guaranteed prize pools up to €10,000. Monthly cashback events and seasonal specials add extra value throughout the year. All promotions are KSA-compliant with clear terms. New players start with the welcome bonus of 100% up to €2500 + 200 free spins; returning players can explore the active promotions below.
Prize pool up to €10,000 per week
Every week One Casino runs a slot tournament on selected titles from Spinomenal, Gamzix and Smartsoft Gaming. The top 50 players share the prize pool. Entry is free for all registered players; simply play on the designated tournament slot(s) during the qualifying period.
18+. Weekly changing tournament games and prize structure. T&Cs apply.
Join Tournament10% up to €300 cashback
Every Monday, One Casino calculates your previous week's net losses and credits 10% up to €300 directly to your account. No wagering requirement. Minimum net loss of €20 required to qualify.
18+. Auto-credited. Min. net loss €20. Max. €300 per week. No wagering. T&Cs apply.
Claim Cashback50% up to €500 extra playing credit
Depositing on Friday pays extra at One Casino. Active players automatically receive a 50% reload on their deposit up to €500. Available for players with at least one deposit in the previous 7 days. A great way to head into the weekend with more credit for the best slots in the lobby.
18+. Existing players. Min. deposit €20. Wagering 30x. T&Cs apply.
Claim Reload BonusExclusive events around major dates
One Casino runs special promotions around major events and holidays, including enhanced prize pools, exclusive free spin packages and special tournaments. Prize pools for seasonal specials have previously reached €25,000. Sign up for the newsletter or check this page regularly so you never miss a deal.
18+. Terms vary per promotion. T&Cs apply.
View Special EventsEntering a One Casino tournament is straightforward. When a tournament is active, it appears in the promotion calendar on this page. Click through to the tournament page, read the terms, then start playing on the designated slot(s). Your score is tracked automatically on the leaderboard. Prizes are paid out automatically at the end of the tournament period. Free entry for all registered One Casino players. See the full games library for available titles, or grab a bonus before you start.
Register now and join live tournaments and weekly offers.
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