Discover a mystery reward every Thursday with National Casino’s Secret Bonus. Make a qualifying deposit and reveal a surprise offer—anything from free spins to a massive 200% bonus.
Bonus Breakdown
Straight to the point: Deposit €40 or more on Thursday to unlock a random surprise bonus, including free spins, no-wager cash, or up to a 200% match bonus.
- Offer Type: Secret bonus (random reward)
- Min Deposit: €40
- Availability: Once per week on Thursdays (00:00–23:59 UTC)
- Possible Rewards:
- 50% bonus up to €100
- 100 Free Spins
- 40 Free Spins (Wager x5)
- 30 Free Spins (higher spin value)
- 300 Free Spins on 5 games
- 200% bonus up to €500
- €100 cash bonus (no wagering)
Free Spins Game: Chosen by you from the eligible list
How to Claim
- Log in and go to the deposit window
- Select the Secret Bonus card
- Deposit at least €40 in a single transaction
- Your random bonus will be revealed and activated
Other Important Terms
- Bonus must be activated within 3 days of receiving
- You have 7 days to complete wagering
- Bonus types and wagering terms vary by what you receive
- Standard Bonus Terms & Conditions apply
Feeling lucky? Make a Thursday deposit and see what the Secret Bonus has in store for you!
Strictly 18+ ONLY. Terms and conditions and wagering apply.
More National Casino Bonuses
Check out more bonuses from National Casino below or view All Bonuses and National Casino Review here.
National Casino Friday Reload Bonus
Start your weekend with a boost thanks to National Casino’s Friday Reload Bonus. Make a qualifying deposit and grab a 50% match bonus plus 100 Free Spins on Book of…
National Casino Unlimited Reload Bonus
Enjoy a little something extra every time you top up your account. With National Casino’s Unlimited Bonus, you get free spins with every deposit—the more you deposit, the better the…
National Casino Fortune Wheel Bonus
Spin your way to surprise rewards with National Casino’s Fortune Wheel Bonus. Make a qualifying deposit and take a shot at winning Free Spins, cash prizes, or reward points—every spin…
National Casino Bonus Codes and Special Offers
Got a bonus code? Don’t let it go to waste—National Casino’s Promo Codes unlock special rewards for both new and existing players. These offers are limited-time only, so act fast!…
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