Thunder Coins XXL: BoosterCells Charges Up Hold & Win with Growing Coin Values

Thunder Coins XXL: BoosterCells takes the familiar fruit-and-coin formula and gives its bonus game a more powerful electrical charge. Coin values no longer disappear after being collected — BoosterCells can keep those amounts stored directly on the grid, ready for later Coins to absorb and build even higher. Sticky Thunder Coins add another layer by gathering values across the reels and occasionally boosting what is already stored, while four jackpot tiers remain in play throughout the action. The game arrives on September 17, 2026.

Thunder Coins XXL: BoosterCells Game Details

Thunder Coins XXL BoosterCells Base Gameplay

BoosterCells Keep Collected Values on the Grid

The BoosterCells Feature changes what happens after Coin values are collected during the Bonus Game. Instead of disappearing completely, collected amounts can remain stored in their positions on the grid.

When another Coin later lands on one of these stored cells, it absorbs the value already held there. The cell then continues carrying the increased amount, allowing Coin values to build as the bonus progresses.

Thunder Coins XXL BoosterCells Bonus Game

Thunder Coins Collect and Boost

Thunder Coins can land on reel 2 and remain sticky for the duration of the feature. Each one collects the values of all Coins currently showing across the reels.

New Thunder Coins can also randomly increase the values stored inside BoosterCells. This means later Coins landing on those positions can inherit larger amounts than were originally collected, linking the two mechanics directly throughout the Bonus Game.

Thunder Coins XXL BoosterCells Thunder Coins

Four Jackpots Stay in Play

The game includes Mini, Minor, Major and Grand Jackpot Coins, with jackpot values reaching up to 1,000x. They can appear alongside ordinary Coins while the Thunder Feature continues collecting values across the full 3×5 grid.

The jackpot system therefore remains part of the same collection loop rather than operating as a completely separate feature: Coins, stored BoosterCell values and jackpot symbols can all contribute as the bonus develops.

Buy Options and Extra Bets Increase Bonus Access

Players can enter the feature directly through Buy Bonus or Super Buy Bonus, with three Thunder Coins guaranteed through the enhanced bonus access described for the game.

Two Extra Bet options offer another route. Double Chance increases the chance of reaching the Bonus Game, while Thunder Spin pushes that probability higher again, allowing the trigger chance to be doubled or tripled depending on the selected option.

Thunder Coins XXL BoosterCells Thunder Spin

The Charge Keeps Building

Thunder Coins XXL: BoosterCells turns a simple Coin collection round into something that can keep gaining power from one landing to the next. Stored values give later Coins more to absorb, Thunder Coins can raise those values again, and jackpot Coins add another target while the grid stays charged. The result is a bonus built less around one big reveal and more around watching the same positions become increasingly valuable as the electricity keeps flowing.