Thunder Coins XXL: BoosterCells – Play Online

Thunder Coins XXL: BoosterCells Overview

Thunder Coins XXL: BoosterCells continues Playson's Hold and Win series. Related titles in the same lineage include 3 Thunder Coins and Coin Strike XXL. The BoosterCells mechanic sets it apart from earlier entries: values stack by position inside the bonus round instead of resetting with each new coin.

Slot Theme & Visuals

The reels pair an electric storm motif with a classic fruit line-up: cherries, plums, oranges, lemons, watermelons and grapes. BAR and a Bell sit next to a Wild marked 777. Lightning bolts and sparks frame the grid, while gold coin symbols carry the charge.

RTP & Volatility

Base RTP sits at 96.50% with High volatility. Thunder Coins XXL Booster Cells carries high volatility and a 5,000x win ceiling.

Plan a bankroll that can absorb a run of spins without a major hit, especially when using Buy Bonus Game or Super Buy Bonus Game.

Thunder Feature

Thunder Feature triggers when a Thunder Coin symbol appears together with any Coin symbol. The Thunder Coin lands only on reel 2, and the Coin symbol lands only on reels 1 and 3.

Once triggered, the feature adds up the value of every Coin symbol on the grid, including Coin symbols tied to a jackpot tier. That total applies to the current base game spin, or to the Total Win inside the Bonus Game.

Two random edge cases widen the trigger window. If a Thunder Coin lands with no Coin symbols on the grid, the game can add Coin symbols on its own. It still fires the feature or the Bonus Game. If one or more Coin symbols land without a Thunder Coin, the game can add a Thunder Coin instead, with the same result.

A third path runs through the Pile of Gold Feature. Any Coin symbol in the base game can trigger it. It drops enough Coin or Thunder Coin symbols onto the grid to launch the Bonus Game directly. Between direct landing, the random symbol additions and Pile of Gold, the Bonus Game has three independent routes in.

BoosterCells Feature

BoosterCells Feature is the accumulation engine behind the Bonus Game. Only Coin and Thunder Coin symbols land on the grid during this round. Thunder Coin lands exclusively on reel 2 and stays sticky for the rest of the round. Each Coin symbol carries a value of 1x, 2x, 3x, 4x, 5x, 6x or 8x the total bet.

The round opens with 3 respins, and every new symbol that lands resets the counter back to 3. The core rule: each collected Coin leaves its value stored on the position where it landed. A new Coin landing on an already-stored position adds its value to what is there. The combined total becomes the new stored value for that cell. Values on the grid build round after round instead of being replaced.

The sticky Thunder Coin on reel 2 plays a separate role. Each time it appears, it randomly boosts several stored values on the grid at once, a step no regular Coin performs on its own. When the respins run out, the Bonus Game ends. Every stored value on the grid, now carrying any Thunder Coin boosts, adds to the Total Win.

Jackpots

The four jackpot tiers are awarded through random Jackpot Coin symbols. These can appear specifically during Thunder Feature, not at any other point in the game. Each tier pays a fixed multiplier of the total bet.

Bonus Rounds

Coin symbols on reels 1 and 3 landing together with a Thunder Coin on reel 2 trigger the Bonus Game. Two extra-bet options change the odds of reaching it. Double Chance, at 1.5x the total bet, doubles the trigger chance. Thunder Spin, at 4x the total bet, triples it and guarantees one Thunder Coin on every spin.

Bonus Game

The free route into the round runs through natural symbol landings or through the random Thunder Feature and Pile of Gold triggers. Starting conditions are standard: 3 respins, with no guaranteed extra Thunder Coin symbols.

Buy Bonus Game

Buy Bonus Game grants direct entry for 75x the total bet. Conditions inside the round match the standard trigger exactly, with no extra Thunder Coin symbols included.

Super Buy Bonus Game

Super Buy Bonus Game costs 200x the total bet and changes the round itself, not just the price. It starts with 3 guaranteed Thunder Coins, which means 3 guaranteed boost cycles on stored values from the opening respin. That raises the stacking potential of BoosterCells Feature compared to a standard entry, where a Thunder Coin appearance carries no guarantee.

Thunder Coins XXL: BoosterCells Paytable

Only 15 fixed paylines pay, reading left to right, and only the highest combination on each line counts.

Feature Buy

Buy Bonus Game and Super Buy Bonus Game differ mainly in cost and starting guarantees. The table lines up both options side by side.

Double Chance, at 1.5x the total bet, doubles the odds of triggering the Bonus Game without adding any guaranteed symbols. Thunder Spin, at 4x the total bet, triples the trigger odds and guarantees one Thunder Coin on every spin. That speeds up entry into BoosterCells Feature without guaranteeing the Bonus Game itself.

How to Play Thunder Coins XXL: BoosterCells

Similar Slots by Playson

Thunder Coins XXL: BoosterCells sits inside Playson's Hold and Win series.

About Playson

Playson was founded in 2012 and is headquartered in Malta, holding licences from the Malta Gaming Authority, the UK Gambling Commission and AGCO in Ontario. The studio produces online slots only, with no live casino or table games in its catalog.

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