Thunder Coins XXL: Booster Cells Demo Slot by Playson Free Play

Thunder Coins XXL: Booster Cells is an online Slot from Playson.

Quick Facts
- Layout: 5 reels x 3 rows
- Paylines: 15 fixed
- Key mechanics: BoosterCells Feature, Thunder Coins Collect, Respins Bonus Game, Bonus Buy
- Special symbols: Wild 7s, Thunder Bonus symbols, Jackpot Coins

How the Game Plays
Thunder Coins XXL: Booster Cells slot by Playson takes the popular electrified coin concept and expands it across an enlarged 5x3 grid with 15 fixed paylines. The visual presentation pairs retro fruit machine elements—including cherries, plums, watermelons, bells, and bars—with striking blue lightning and glowing golden coins. Blazing red sevens serve as wild symbols to substitute for standard pay symbols and complete winning lines. With an RTP of 96.25% and medium-high volatility, players can test symbol behaviors and explore the coin mechanics freely in the Thunder Coins XXL: Booster Cells demo.

BoosterCells & Bonus Game Explained
The defining mechanic of the game is the all-new BoosterCells Feature. During the Hold and Win style Bonus Game, every collected coin value is stored directly in active cells across the reels. When new coin symbols land in these stored positions, they absorb the existing value and build higher amounts throughout the round. Thunder Bonus symbols land exclusively on reel two, locking in place for the remainder of the feature to gather all visible coin amounts. Each newly landed Thunder symbol can also trigger random value boosts across the grid. Players can use the Bonus Buy options or activate Extra Bet modes to enter the bonus round directly.

Jackpot Features Explained
Alongside standard prize coins, four in-game jackpots are available during the feature: Mini, Minor, Major, and Grand. Landing these special coin icons awards multipliers up to 1,000x the base bet, contributing toward a maximum win cap of 5000x.

Click the Play for Free button to load the Thunder Coins XXL: Booster Cells demo, test its features and payouts and decide if it is a game you enjoy.