Happy Fish

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Rules and Gameplay

The Happy Fish slot by Booongo operates under a unique ‘Megalines’ system akin to the popular Megaways format, featuring six dynamic reels that can display between 2 to 7 symbols each, creating up to 117,649 ways to win. The game starts by selecting a bet amount from $0.20 to $10 per spin. Wins are achieved by matching symbols on adjacent reels starting from the leftmost reel. This setup offers a fluid and variable approach to forming winning combinations, ensuring that each spin can lead to different configurations and outcomes.

Bonus Features

Happy Fish is packed with engaging bonus features designed to enhance the gaming experience and boost potential winnings:

  • Wilds and Power Wilds: Regular wilds help complete winning combinations by substituting for other symbols. Power Wilds carry multipliers of x2 or x3 that multiply the wins they are part of.
  • Free Spins: Landing three or more scatter symbols triggers the Free Spins bonus round. The number of free spins awarded depends on the number of scatters, ranging from 8 to 14 free spins.
  • Sticky Wilds: During free spins, all wilds become sticky, remaining in place for the duration of the round, which can significantly increase payout potential.
  • Bonus Buy Feature: Players can directly purchase entry into the Free Spins round for 100 times their stake, guaranteeing a minimum of three scatters on the next spin.


Happy Fish slot features a colorful array of symbols that align with its vibrant underwater theme:

  • Lower-value symbols: These include card ranks from 9 to Ace, which provide smaller payouts.
  • Higher-value symbols: Themed around various brightly colored tropical fish, these symbols offer higher payouts.
  • Special Symbols:
    • Wild Symbol: Appears as a bubble with the word ‘WILD’, substituting for all other symbols except the scatter.
    • Scatter Symbol: Triggers the Free Spins bonus when three or more appear anywhere on the reels.


Here’s a brief overview of the pay structure:

Symbol 3 Matches 4 Matches 5 Matches 6 Matches
Ace (A) $0.10 $0.20 $0.40 $1.00
Orange/Red Fish $0.50 $1.00 $2.00 $4.00
Goldfish with red stripes $0.75 $1.50 $3.00 $5.00


Happy Fish utilizes a dynamic payline structure with up to 117,649 ways to win, determined by the random number of symbols that appear on each reel per spin. This ‘Megalines’ system ensures that each spin can result in a different number of possible winning combinations, starting from the leftmost reel and requiring adjacent matches of symbols.

Pros & Cons

Pros Cons
High maximum win potential of up to 10,000 times the stake. Average RTP of 95.61% is slightly below the industry average.
Dynamic “Megalines” feature offers up to 117,649 ways to win. High volatility may not suit all players, particularly those with smaller bankrolls.
Features such as Sticky Wilds and Multiplier Power Wilds enhance gameplay. Bonus Buy feature restricted in some jurisdictions.

Minimum and Maximum Bet

The betting range in Happy Fish allows players flexibility with their wagering strategy. The minimum bet starts at $0.20, making it accessible for low-stakes players. The maximum bet is capped at $10 per spin, which can appeal to mid-range bettors but might not be high enough for high rollers looking for more substantial bet limits.

Game Jackpot

Happy Fish does not feature a progressive jackpot, but it offers a substantial fixed jackpot with the potential to win up to 10,000 times the player’s stake. The game operates with a high volatility, which implies that payouts can be significantly large but may occur less frequently. Additionally, the Return to Player (RTP) rate is set at 95.61%, which is slightly below the industry average, indicating a moderately high house edge.

About Provider

Booongo, the developer behind Happy Fish, is renowned for creating visually appealing and technologically advanced slot games. The company focuses on delivering high-quality, innovative gaming solutions with a strong emphasis on mobile compatibility and engaging gameplay features. Booongo’s dedication to enhancing player experience is evident in their detailed graphics and intricate game mechanics, positioning them as a reputable provider in the competitive online casino market.

How To Play

  • Open the game at a preferred online casino.
  • Set your betting amount using the plus and minus buttons to adjust the bet size. Bets range from $0.20 to $10 per spin.
  • Review the paytable and game rules by accessing the game’s information section to understand the payouts and features.
  • Press the spin button to start the game. The reels will spin and then come to a stop showing the symbols.
  • Wins are calculated based on the number of matching symbols on adjacent reels starting from the leftmost reel.
  • Utilize special features such as Free Spins and Power Wilds to enhance potential winnings.
  • Optionally, use the auto-play feature to set a predetermined number of spins at a fixed bet amount.


Happy Fish is an engaging and visually stunning online slot that offers a plethora of features to keep players entertained. With its vibrant underwater theme and dynamic Megalines mechanic, it provides a fresh take on the traditional slot experience. Although the RTP is slightly lower than some competitors, the high maximum win potential and innovative features like Sticky Wilds and Multiplier Power Wilds make it a worthwhile option for both new and experienced players. Booongo has successfully delivered a slot game that balances entertainment with potential profitability, making Happy Fish a commendable addition to any slot enthusiast’s lineup.