Thunder Coins XXL: Hold and Win

Game graphics and theme

Thunder Coins XXL: Hold and Win immerses players in a high-voltage slot experience, where an intense electric blue background radiates energy, ready to unleash lightning. The blue reels glow thanks to the fusion of classic slot machine aesthetics with modern, electrifying elements, creating an atmosphere of thrilling anticipation.

The symbols include shimmering golden bells, stylized ripe fruit, and fiery red number sevens, all adorned with a neon-like glow. Gold coins act as Bonus symbols, while the most powerful Bonus symbol, the Thunderbolt, representing a lightning bolt, triggers the Thunder Coins Feature, collecting all visible Bonus and Prize values to boost winnings.

On the reels, a glittering pile of gold promises unexpected riches, collecting Bonus symbols with the chance to trigger an additional Bonus Game. When Thunder Bonus symbols appear, the light indicators at the bottom of each reel flash, signaling the arrival of electrifying rewards. The sound design masterfully alternates between a tense, suspenseful atmosphere during the main game and an explosive rock guitar solo when the Bonus Game is triggered, amplifying the adrenaline rush.

Feel the force of the storm with Thunder Coins XXL: Hold and Win !

Game screen

The game screen has a size of 1280 × 720 pixels and is made up of two main elements: the game panel and the video display area.

Video viewing area

The rollers are shown in this area.

Upon opening the "Betting Menu" (), the "Auto Play Settings" ( (this

This function can be enabled or disabled as required. Alternatively, the "Game Menu" () completely replaces the video display area. Clicking the "X" button () returns the player to the reels screen.

Game panel

The game panel is located at the bottom of the reels in the mobile version (vertical). In the desktop and mobile versions (horizontal), the game panel is located at the bottom right of the reels. It displays the amount of credits available in the player's account, as well as winnings and bet information.

Game Features

Wild symbol

Replaces all symbols in the Main Game, except Bonus and Thunder Bonus.

Bonus Symbol

The payout is indicated by the symbol on the player's coin:

Bets ×1, ×2, ×3, ×4, ×5, ×6, ×8. Only appears in the

rollers 1 and 3.

Thunder Bonus Symbol

Activate the Thunder Coins feature during the Main and Bonus Games. It only appears on reel 2.

Thunder Coin Function

The Thunderbolt Bonus symbol, in combination with any Bonus symbol, activates the Thunderbolt Coin feature. The Thunderbolt Coin feature combines the values of all Bonus symbols, including the Mini, Minor, Major, and Grand Prize symbols, and adds them to the winnings in the Main Game or the Total Win in the Bonus Game .

Bonus Game

The Bonus Game begins when there is at least one Bonus symbol on each reel . Only Bonus and Thunder Bonus symbols are displayed on the reels during the Bonus Game. Thunder Bonus symbols appear only on reel 2 and remain on the reels throughout the Bonus Game. At the start of the Bonus Game, 3 new spins are awarded. Each new symbol resets the number of new spins to 3. The Bonus Game continues until the new spins are exhausted. At the end of the Bonus Game, the accumulated values on all Thunder Bonus symbols are added to the Total Win.

Gold Battery Function

Any Bonus symbol that appears on the reels during the Main Game grants the possibility of activating the Gold Stack feature, which adds enough Bonus or Thunder Bonus symbols (or more) to trigger the Bonus Game.

In-game prizes

The random appearance of the following Bonus symbols

During the Bonus Game, activate the corresponding Prizes:

  • Mini Prize = 15 bets
  • Minor Prize = 30 bets
  • Major Prize = 100 bets
  • Grand Prix = 1000 bets

Buy the Bonus Game

  • The player can purchase a random Bonus Game with 1 or more Thunder Bonus symbols of 70 bets.
  • The player can purchase a random Superbonus Game with 3 or more Thunder Bonus symbols of 200 bets.
  • The purchased Bonus Game is played with the last bet
  • The bet for Bonus Game mode can be increased further with the Plus (+) button or decreased with the Minus (-) button.

Payment Lines

  • Payment Lines: 15 lines
  • The betting lines are paid out successively from the far left to
  • Only the highest profit per line is paid.
  • Simultaneous gains
  • Winning combinations and payouts are awarded according to the Table 

RTP = 95.60%

Last modification date: 11/28/2025