What’s inside your Mystery Chest?

1. This “Holiday Prize Express Slots” Promotion is open to players of GrosvenorCasinos.com who are aged 18 years and over and can view this promotion in the ‘Promos’ section of their account.
2. This Promotion is managed by Grosvenor Casinos and Pragmatic Play.
3. The promotion will run from Wednesday 25^th November 2026 at 19:01 UK time and ends on Wednesday 13^th January 2027 at 23:59 UK time (the “Promotional Period”).
4. The Promotion will run for 7 weeks as follows:

Week 1: Wednesday, 25th November 19:01– Wednesday, 02nd December 18:59

Week 2: Wednesday, 02nd December 19:01– Wednesday, 03rd December 2026 18:59

Week 3: Wednesday, 09th December 19:01– Wednesday, 16th December 2026 18:59

Week 4: Wednesday, 16th December 19:01– Wednesday, 23rd December 2026 18:59

Week 5: Wednesday, 23rd December 19:01– Wednesday, 31st December 2026 18:59

Week 6: Wednesday, 31st December 19:01– Wednesday, 06th January 2027 18:59

Week 7: Wednesday, 06th January 19:01– Wednesday, 13th January 2027 23:59

Promotion Mechanics

5. Players must opt-in via the in-game pop-up on any of the participating game.
6. To qualify for the promotion, players must wager at least the minimum bet (which varies by game) in cash on any Participating Game (see term 14) and collect all configured symbols (see term 9).
7. A symbol may be randomly triggered on each Qualifying Bet, with a maximum of one symbol awarded per Qualifying Bet. Available symbols: Gift, Sparkle(star) and Christmas Tree.
8. Players must collect all three symbols to qualify for a prize. No prizes will be awarded for collecting only one or two symbols.
9. Once all three symbols have been collected, a selection of chests will be displayed on screen.
10. Players must select one chest to reveal their random prize.
11. The participating games:

Gates of Olympus Xmas 1000, Sweet Bonanza Xmas, Wisdom of Athena 1000 Xmas, Big Bass Christmas – Frozen Lake, Santa’s Slay,  Santa’s Xmas Rush, Penguins Christmas Party Time, Big Bass Xmas Xtreme, Ding Dong Christmas Bells, Sugar Rush Xmas, Big Bass Christmas Bash, Starlight Christmas, Bigger Bass Blizzard – Christmas Catch, Santa’s Great Gifts, Christmas Big Bass Bonanza, Santa’s Wonderland, Christmas Carol Megaways, Leprechaun Carol, Santa, Big Bass Christmas Blast 1000, Xmas Guardians Megaways, Sweet Bonanza Xmas 2500

12. Each player may win a maximum of two prizes every week.

Prizes Terms and Conditions:

13. Prizes are awarded as either free spins or a cash prize. Cash prizes are calculated by multiplying your winning multiplier by your bet stake, up to a maximum bet stake of £2. For example, 1000x × £0.20 = £200.
14. The prize types, prize values (multiplier or free spins), and the number of each prize available are displayed in the "Prizes" section of the promotional menu available in-game or in the table below.

15. Free Spins are awarded as either 20 or 10 free spins and must be claimed and played on the same game in which they were won, at the same stake used to trigger the award. For example: If a player stakes £0.50 and wins Free Spins, each Free Spin will be played at a value of £0.50.
16. Free Spins must be used within seven days from the time you receive them. 
17. Free Spins will become available to play shortly after the prize is awarded. If they do not appear, players may need to reload the game. 
18. Winnings from Free Spins are credited only after all Free Spins have been played and are paid as cash amounts without any wagering requirements. 
19. Players can track their wins, and the remaining number of prizes in real-time within the Participating Game. 

General Terms and Conditions

20. The promoter is Rank Interactive (Gibraltar) Limited (referred herein as 'us', 'our' and 'we').
21. Unless stated otherwise, any reward is non-exchangeable, non-transferable and no cash alternative is offered.
22. Our decision regarding any aspect of the Promotion is final and binding.
23. We accept no responsibility for entries not successfully completed due to a technical fault or malfunction, computer hardware or software failure, satellite, network or server failure of any kind.
24. The Promotion is not available in conjunction with any other offer or promotion on this website.
25. Should it be required as part of our normal regulatory obligations, we may at any point before, during or after the Promotion, ask you for a valid proof of identity, such as a passport and/ or proof of address, to verify your identity, age and residency. If, following review of your documents it is identified that you have breached the general terms and conditions of our website(s), you will automatically be excluded from the Promotion and we will forfeit any prizes that have already been allocated or awarded to you, without compensation.
26. Participants whose accounts with us have been closed or suspended or who are found to have multiple accounts when the Promotion has ended will have their prize forfeited.
27. Customers who have been previously advised that they are not entitled to receive bonuses will not be able to participate in this promotion. If a customer is able to participate as the result of an error, we will remove any bonus and associated winnings.
28. We may be required to place restrictions on your account as part of our regulatory obligations, which may in turn affect your ability to take part in new promotions or offers. If you have already opted in or is wagering towards completion of a bonus, your ability to complete the bonus will not be affected by these restrictions.
29. We will remove any bonus and associated winnings from a customer found to be in breach of these terms and conditions or suspected of fraud.
30. We reserve the right to void, withdraw, cancel, suspend, or amend the Promotion where it becomes necessary to do so. This will be without prejudice to any participant who has already placed a qualifying bet.
31. We will remove bonus funds and associated winnings should gaming patterns indicating promotional abuse be identified. These include but are not limited to, using manipulating game mechanics to circumvent wagering restrictions of bonus funds by switching games during bonus pounds or placing bets to delay the credit of winnings; “stashing” of bonus stage progression prior to completion of wagering; taking advantage of game mechanic flaws; “parking” cash funds in any product vertical or games to complete bonus wagering with minimal risk to cash funds.
32. We will also remove bonus funds and associated winnings should gaming patterns indicating other prohibited practices be identified. This includes using promotional funds in conjunction with other players as part of syndicate play; and colluding with other players.
33. These terms and conditions and the Promotion are governed by English law. If any entrants to the promotion wish to take court proceedings, then they must do this within the courts in England.
34. The Promotion is also subject to our General Terms and Conditions, and all communications subject to our Privacy Policy which can be found here.