Cannon Thunder

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Rules and Gameplay

The Cannon Thunder slot machine, developed by Merkur, is a captivating game set against a military-themed backdrop, focusing on the era of cannon warfare. Players navigate through the game on a standard layout of 5 reels and 3 rows, with the option to select up to 20 paylines. This game is designed to be accessible to all types of players, featuring straightforward mechanics where the goal is to land matching symbols across paylines to form winning combinations. The gameplay is enriched by historical warfare aesthetics, and despite its seemingly basic appearance, the game offers a depth of strategic play. The betting range is flexible, accommodating various bankroll sizes, making it suitable for casual players and high rollers alike.

Bonus Features

Cannon Thunder introduces several engaging bonus features that significantly enhance the gaming experience. These features are designed to increase winning potentials and provide thrilling gameplay moments.

  • Free Spins: Triggered by landing three or more scatter symbols represented by trays of cannon balls. Players can earn 10, 15, or 20 free spins based on the number of scatters. During free spins, moving wilds add dynamic action and increased chances for big wins.
  • Moving Wilds: In the free spins round, wilds move from right to left across the reels, creating winning combinations and potentially leading to more wilds joining the action.
  • Gamble Feature: After any win, players have the option to gamble their prize in a card color guessing game or climb up a cash ladder for increased payouts.

These bonus features are not only lucrative but also keep the gameplay exciting and unpredictable.


Cannon Thunder’s symbols are deeply rooted in its war theme, ranging from lower-scoring card symbols to higher-value military icons.

  • Lower-scoring symbols: The classic card symbols (9, 10, J, Q, K, A) represent the lower end of the paytable.
  • Higher-value symbols: These include mid-scoring commanders and a fictional US flag with an eagle, reflecting the game’s historical warfare theme.
  • Special symbols: The cannon acts as the Wild symbol, substituting for other symbols except the scatter to form winning combinations. The scatter symbol is depicted by a pile of cannonballs, triggering the free spins feature.


Symbol 3 Symbols 4 Symbols 5 Symbols
9, 10, J 10x 30x 200x
Q, K, A 20x 100x 400x
Commanders/Flag 30x 200x 600x


Cannon Thunder offers up to 20 selectable paylines, providing players with various options to form winning combinations. The paylines can be adjusted according to the player’s strategy, increasing the flexibility and engagement of the gameplay. Whether you’re aiming for frequent small wins or holding out for larger payouts, adjusting the paylines can be a key part of your game strategy.

Pros & Cons

Pros Cons
Simple and straightforward gameplay Graphics could be better
Flexible betting options and an auto-play feature Lacks intricate storyline or interactive elements
Interesting free spins feature with moving wilds

Minimum and Maximum Bet

The betting range in Cannon Thunder is designed to accommodate both low and high rollers. Players can start betting from as low as $0.01 per line, making it accessible to those on a tight budget. For those looking to make higher stakes, the maximum bet can go up to $40 per spin. This wide range allows players of all budgets to enjoy the game while managing their bankrolls effectively.

Game Jackpot

Cannon Thunder does not feature a progressive jackpot, but it offers the chance to win significant amounts through its gameplay features, especially in the free spins round. The game boasts a Return to Player (RTP) rate of 95.96% and is characterized by high variance. This means that while wins may not occur as frequently, when they do, they can be substantial, appealing to players looking for bigger payouts.

About Provider

Merkur, the provider of Cannon Thunder, is renowned for its high-quality slot games that blend traditional gaming with innovative features. With a strong presence in both land-based and online casinos, Merkur has established itself as a reliable and respected name in the gaming industry. Their games are known for their meticulous design, engaging gameplay, and fairness, ensuring a satisfying gaming experience for players around the world.

How To Play

  • Select your bet size by adjusting the bet per line. The total bet is calculated as bet per line multiplied by the number of active paylines.
  • Choose the number of paylines you wish to play with. You can select up to 20 paylines for more chances to win.
  • Press the spin button to start the game. The reels will spin and then come to a stop, revealing any winning combinations.
  • Look out for scatter symbols (cannonballs) to trigger the free spins feature. Landing three or more scatters will activate this bonus round.
  • Utilize the auto-play feature for continuous gameplay. You can set a predetermined number of spins at the same bet amount.
  • Take advantage of the gamble feature after any win for a chance to double your payout. Choose between the card gamble or the ladder gamble.


Cannon Thunder is a testament to Merkur ability to produce engaging slot games that appeal to a wide range of players. Despite its simplistic graphics, the game shines through its exciting gameplay mechanics, particularly with the innovative moving wilds feature during the free spins round. The flexible betting options and the inclusion of a gamble feature add another layer of depth to the game. While it may lack a progressive jackpot or a complex storyline, Cannon Thunder offers solid entertainment and the potential for substantial wins, making it a worthy addition to any slot enthusiast’s playlist.