Thunder Blackjack

Thunder Blackjack Overview

Thunder Blackjack is a single-hand blackjack game from Funky Games. It adds a multiplier that carries over into the next round. Funky Games’ own game page lists an RTP of 98.15%, low volatility and a maximum multiplier of 25x. SlotCatalog gives 99.26% as the RTP. The table uses dark blue felt and gold trim, and the dealer’s shoe carries a lightning logo.

Table Rules

The aim is the same as in any blackjack game: get closer to 21 than the dealer without going over. Cards 2 to 10 count at face value, jacks, queens and kings count as 10, and an ace counts as 1 or 11. An ace with a ten-value card as your first two cards is a blackjack, the best hand in the game.

The rules are printed on the felt: the dealer stands on all 17 and above, and there is no fee on Split or Double. You play with the usual Hit, Stand, Double and Split buttons, and the running totals of both hands sit next to the cards.

The Thunder Multiplier

Funky Games explains the twist this way: pay the Thunder Fee, win the hand, and you unlock a 2x–25x multiplier for your next round. Multipliers you earn can carry into Split and Double actions too. Six badges above the table show what each final hand is worth: 4–17, 18, 19, 20, 21 and Blackjack. The values change from round to round. In one round they read 2x, 2x, 3x, 4x, 5x and 6x. In another they rose to 2x, 3x, 4x, 5x, 8x and 12x for a blackjack. A winning hand lights up its badge.

Our Session

• A four-card 21 beat a dealer who busted on 22, and the 5x badge lit up. The win was 5,500.
• In each round we played, the total bet was twice the chip on the table: a 2,750 chip showed a 5,500 total, and a 250 chip showed 500.
• A hand of 2 and 8 made 10 against a dealer 10. Basic strategy says to hit here, not double, because the dealer’s card is strong.

Who Is It For?

With low volatility and a 25x cap on the multiplier, Thunder Blackjack is a steady game rather than a jackpot hunt. It suits players who already know basic strategy and want a small extra goal in every hand. The multiplier only helps if you win the next hand too, so the usual blackjack decisions still matter most. When we checked on 28 September 2026, all six of our partner casinos listed the game.

You can try this game on Aztec Online Casino. There’s a unique casino bonus offer of 300% up to £2000 for a limited time.