Thunder from Olympus: 30 bonus spins on Ze Zeus from September 18 to 20
A short exclusive promotion gives you 30 spins worth 0.40 € each on the Hacksaw Gaming slot Ze Zeus. Here is exactly how to activate it and which wagering rules apply.

In short
- The Grom z Olimpa (Thunder from Olympus) promotion runs from Friday, September 18 at 00:00 to Sunday, September 20 at 23:59.
- A deposit of at least 30 € unlocks 30 free spins worth 0.40 € each on Ze Zeus by Hacksaw Gaming.
- Winnings from the spins convert to bonus funds with a 35x wagering requirement, and payouts from this bonus are capped at 300 €.
What Thunder from Olympus offers
In the Exclusive Offers section, a short new promotion called Grom z Olimpa (Thunder from Olympus) runs from Friday, September 18 at 00:00 until Sunday, September 20 at 23:59. Players who make a deposit of at least 30 € receive 30 free spins worth 0.40 € each. The spins are credited on Ze Zeus, a slot from Hacksaw Gaming, so the promotion’s Greek-mythology theme matches the game you’ll actually play.
How to activate the bonus
The activation steps match other exclusive offers on casino.si:
- Log in to your casino.si account between September 18 and 20.
- Make a deposit of at least 30 €.
- Open My Offers (the gift icon in the top right corner) and find Grom z Olimpa.
- Activate the bonus and play through your 30 spins on Ze Zeus.
- Once the spins are used up, any winnings convert automatically into bonus funds subject to the wagering requirement.
Play at the online casino licensed by the Government of Slovenia
25 free spins on registration and a 100% welcome package up to €50 on your first deposit.

Wagering rules and payout limits
After all 30 free spins are completed, any winnings convert into bonus funds carrying a 35x wagering requirement. Only SLOT games count toward this requirement; other game types contribute nothing. While the bonus is active on your account, the maximum stake per spin is 1 €. Once you’ve cleared the wagering requirement, payouts from this bonus are capped at 300 €. If the remaining bonus balance drops to 0.10 € or less, it closes automatically and can no longer be played.
You must activate the bonus within 7 days of it being credited, and the wagering requirement must also be met within that same 7-day window, otherwise the bonus expires. If you request a withdrawal before the wagering requirement is met, the bonus and any related winnings are voided.
What to watch out for
- You can claim this promotion only once per person, household, or IP address.
- Free spins can’t be transferred to another player or exchanged for cash.
- You can’t activate another bonus while Grom z Olimpa is active on your account, since only one bonus can run at a time.
- Read the full terms on the promotion page before activating, as casino.si reserves the right to change or cancel the offer at any time.
- Play responsibly: set deposit limits in your profile if you want extra control over your spending.
Pogosta vprašanja
Exactly when is the promotion active?
From Friday, September 18 at 00:00 to Sunday, September 20 at 23:59. Outside this window, the spins can’t be activated.
Which game can I use the spins on?
The 0.40 € spins are credited exclusively on Ze Zeus, a slot from Hacksaw Gaming.
How long do I have to clear the wagering requirement?
You must activate the bonus within 7 days of being credited, and the 35x wagering requirement must also be completed within that same 7-day period, otherwise the bonus and any winnings expire.