The Big Sunday Blast is a Network Tournament Series organised by Playson and Booongo, running every Sunday between 01.06.2025 02:00 UTC – 31.08.2025 23:59 UTC.

The total prize pool of each tournament in the series is 20,000 EUR (or the player's currency equivalent).

The series includes 14 tournaments:

1) 01.06.2025 02:00 UTC – 01.06.2025 23:59 UTC

2) 08.06.2025 02:00 UTC – 08.06.2025 23:59 UTC

3) 15.06.2025 02:00 UTC – 15.06.2025 23:59 UTC

4) 22.06.2025 02:00 UTC – 22.06.2025 23:59 UTC

5) 29.06.2025 02:00 UTC – 29.06.2025 23:59 UTC

6) 06.07.2025 02:00 UTC – 06.07.2025 23:59 UTC

7) 13.07.2025 02:00 UTC – 13.07.2025 23:59 UTC

8) 20.07.2025 02:00 UTC – 20.07.2025 23:59 UTC

9) 27.07.2025 02:00 UTC – 27.07.2025 23:59 UTC

10) 03.08.2025 02:00 UTC – 03.08.2025 23:59 UTC

11) 10.08.2025 02:00 UTC – 10.08.2025 23:59 UTC

12) 17.08.2025 02:00 UTC – 17.08.2025 23:59 UTC

13) 24.08.2025 02:00 UTC – 24.08.2025 23:59 UTC

14) 31.08.2025 02:00 UTC – 31.08.2025 23:59 UTC

The minimum bet required to participate is 0.50 EUR.

To qualify and be eligible to claim a prize, the player must complete at least 100 spins during the tournament period.

All points collected during the qualification stage are retained and counted once the player qualifies.

Non-qualified players are also shown on the Leaderboard, but stripped in grey until they are qualified.

Scoring (Winning Mechanic): HIGHEST SINGLE ROUND MULTIPLIER (HSRM). Only the highest win multiplier (win-to-bet ratio) achieved in a single spin is considered. For example, if the bet is 2 EUR and the win is 50 EUR, the player receives 25 points. This score remains until a higher multiplier occurs.

The leaderboard is updated in real-time for each spin. If no player action is registered, stats sync every 10 seconds between the game and promo servers.

A 5-minute delay is applied at the end of each tournament for final result verification. During this time, the leaderboard is shown in a stripped view for data integrity.

Prize distribution per tournament:

1st place – 3,000 EUR

2nd place – 2,500 EUR

3rd place – 2,000 EUR

4th place – 1,500 EUR

5th place – 750 EUR

6th to 10th place – 300 EUR each

11th to 20th place – 200 EUR each

21st to 50th place – 100 EUR each

51st to 125th place – 50 EUR each

With the auto-payout feature enabled, prizes are paid out automatically to winners who receive a win pop-up after the tournament is finished and the final results are available on the leaderboard.

To receive the payout, the player must make at least one spin in any Playson or Booongo game after the tournament ends.

In case of technical failure of auto-payout, operators will process rewards manually based on the Winners Report provided.

By participating in the tournament, you agree to the Terms and Conditions outlined here and the ones provided by the operator.

The provider holds the right to cancel the tournament for an indefinite term without any payments according to the leaderboard in cases of emergency.

Only qualified players are eligible to claim prizes.

Only real money and bonus balance spins are valid. Free spins do not count toward the tournament.

Other than the price to make a spin, there is no additional cost to enter the tournament.

Each player is assigned a personal tournament ID for the leaderboard.

If two or more players are tied, priority is given to the one who achieved the result first.

Tournament rules can be changed anytime.

Malfunction voids all payouts.

Participating games: All games by Playson and Booongo.

By participating in the tournament you agree to the Terms and Conditions outlined here and the ones provided by Oshi Casino.