Frog Grog

Frog Grog is a video pokie from Thunderkick with several special features, including Dropping Symbols where symbols in a winning spin are replaced, which creates the possibility of multiple wins from a single spin, each with an increasing multiplier.


  • Slot type: Video Slot
  • Reels: 5
  • Scatter: No
  • Theme: Magic
  • Lines: 23
  • Bonus Game: yes
  • Wild Symbol: Frog Grog
  • Free Spins: No
  • Payout: $1000
  • Software: NYX Gaming

How to play

Frog Grog is a 5 reel, 23 payline video pokie where all wins pay left to right on the reels. Instead of choosing a coin size and the number of coins and paylines in play, players instead select a total bet per spin, which ranges from $0.10 – $100 (there are fourteen different bet sizes in total). Payouts are multiples of this bet, and the game has an overall RTP of 96.1%. There is no Frog Grog free spins round to take advantage of, nor is there a scatter symbol.

  • Frog symbol is wild and substitutes for all other symbols.
  • When the Frog symbol appears in any losing spin anywhere on the reels, the Frog Burp feature is activated.
  • 5x Moth symbols = 10x total bet (up to $1000)
  • 5x Flower symbols = 6x total bet (up to $600)
  • 5x Red Potion symbols = 3.5x total bet (up to $350)
  • 5x Purple Potion symbols = 3x total bet (up to $300)
  • 5x Green Potion symbols = 2.5x total bet (up to $250)
  • 5x Blue Potion symbols = 2x total bet (up to $200)


The jackpot potential in the Frog Grog casino game is somewhat limited; during base play, the biggest win is 10x the total bet ($1000 if betting the maximum) for hitting 5x Moth symbols. However, the dropping symbols and increasing multiplier increases the payout potential; therefore, with the 7x multiplier in play, the biggest payout win on a single spin increases to 70x the total bet for hitting 5x Moth symbols, or $7,000 when betting the max.

Theoretically, if you were to hit 5x Moth winning combinations on all 23 paylines when the 7x multiplier is in play, then the jackpot win would be 1610x the total bet, or $161,000 when betting the max.

Overall, this is a low- to medium-volatility game that gives plenty of payout opportunities, although seldom are these substantial.

Special Features and Bonuses

Dropping Symbols

In any winning spin, the symbols that make up the winning combination ‘explode’ and disappear, with new symbols dropping in to take their place; these new symbols can then potentially create a new winning combination. Each time this occurs, the multiplier applied to the win increases –  it starts at 1x and progresses to 2x, 3x, 5x and then 7x. Once there is a losing spin, the multiplier re-sets to 1x.

Frog Burp

When the Frog wild symbol appears anywhere on the reels in a losing spin, it ‘burps’ and this then takes out all of the other symbols in that row and column (except for other Frogs). The Frog remains in place as new symbols drop in to replace those that have been removed, and it can then form part of a new winning combination. If this happens, the Frog symbol is taken away along with the other symbols in the winning spin, and is replaced by a new symbol.

Mystery Game

Randomly triggered after any losing spin, all symbols apart from the Frog wild symbol, the Moth and Flower are removed from the reels. When the symbols are taken away, they award a win as though they appeared in a winning payline combination i.e., if five Red Potion symbols are removed from anywhere on the reels in any combination, a 3.5x total bet win is awarded as though the five appeared in a winning combination on a payline.

Graphics and Sounds

Set in a wizard’s or mad scientist’s lair (sort of a cross between Hogwart’s and Gru’s lab in Despicable Me), the visual centrepiece in the Frog Grog slot is a row of shelves, and the symbols ‘drop’ into these rather than appear on rotating reels. The comic book style is visually engaging, albeit somewhat dark in its use of colour, although the bright symbols do illuminate the shelves when they land. The soundtrack of original music is somewhat reminiscent of the Harry Potter films, which sets the tone well, and there are appropriate sound effects for the frog’s ‘burp’ and on winning spins. Overall, the look and feel of the game complements the theme well, even if it is somewhat lacking in dynamism.

Bottom Line

While the game looks and sounds good, the dropping symbols in particular, there is nothing especially innovative about this Frog Grog slots game, either in how it plays or its payout potential. While the Frog Burp feature, dropping symbols and increasing multiplier mean there is always something happening, the rewards don’t necessarily match this – a biggest payout of 10x for hitting the best combination on the reels does seem somewhat miserly. The game will no doubt have its fans due to the wizardry theme, but there is nothing special in the gameplay that makes it stand out.

BONUS: 100% up to $200
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