Feeling curious? SlotSite Casino Mystery Box promotion gives you a fresh shot at free spins every day from Monday to Thursday. Deposit $20+ with code MBOX, open your box, and unbox 25–100 free spins. Play daily for a potential 400 free spins per week.
How Mystery Box Works at SlotSite
- Log in daily to SlotSite Casino from Monday to Thursday during the promo window.
- Deposit $20 or more using bonus code MBOX in the cashier.
- Open your Mystery Box to reveal that day’s free-spin prize (one box per day).
Promo window: Monday 02:00 CEST to Friday 01:59 CEST (redeem once per day).
SlotSite.com Casino
Current Casino Promotion
Mystery Box Prize Odds & Free-Spin Amounts
| Prize | Chance of Winning |
|---|---|
| 25 Free Spins | 36.5% |
| 35 Free Spins | 36.5% |
| 45 Free Spins | 10.43% |
| 55 Free Spins | 10.43% |
| 65 Free Spins | 5.21% |
| 100 Free Spins | 0.94% |
Prizes are awarded at random with each daily Mystery Box.
Wagering Requirements & Conversion Limits
- Wagering: Bonus or winnings from free spins must be wagered 50× before withdrawal.
- Max conversion: After wagering is completed, Bonus Funds convert to Real Money up to $20.
- Game weighting: Wagering contributions vary by game.
Credit, Expiry & Daily Validity Rules
- Box validity: Your Mystery Box is valid for 24 hours from receipt.
- Bonus expiry: Any bonus and winnings expire after 7 days if wagering is not completed.
- One box per day: Redeemable once per day within the weekly window.
- Cashier only: To qualify, the deposit must be made via the casino cashier.
- Withdrawals: Withdrawal requests void any active/pending bonuses.
General Bonus Terms for SlotSite Mystery Box
- Eligibility window: Monday 02:00 CEST – Friday 01:59 CEST each week.
- Min deposit: $20 with code MBOX to receive 1 Mystery Box.
- Weekly potential: Up to 400 free spins if you claim daily Monday–Thursday.
- Provider terms: SlotSite may modify the offer (including prize mix) at any time.
- Standard rules: All promotions are subject to SlotSite’s General Terms & Conditions.
Open your box, reveal your prize, and spin—your next 100-spin haul could be inside today’s Mystery Box.
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