Island Heat

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Rules and Gameplay

The Island Heat slot by Greentube offers a vibrant beach-themed experience with a standard 5×3 reel layout and 30 paylines. Players can place bets ranging from $0.01 to $45 per spin, making it accessible for both low and high rollers. The objective is to land matching symbols across the paylines to form winning combinations. The gameplay is enhanced by its HTML5 technology, ensuring smooth performance across all devices including desktops, tablets, and mobile phones. Players can either spin manually or use the autoplay feature to set a predetermined number of spins at a constant bet level.

Bonus Features

Island Heat includes several enticing bonus features that enhance the gameplay and potential winnings:

  • Free Spins: Triggered by landing three or more scatter symbols, players are awarded a set number of free spins.
  • Gamble Feature: After any win, players have the option to gamble their winnings in a double-or-nothing style game.
  • Mega Symbol (3×3): During free spins, a large symbol can cover up to nine positions on the reels, increasing the chances of a significant payout.
  • Scatter Symbols: These symbols can trigger free spins and also pay out when appearing multiple times on the reels.
  • Wild Symbols: Wilds can substitute for any other symbol except the scatter to form winning combinations.


The game features a variety of symbols that align with its tropical beach theme:

  • High-paying symbols: Parrots, Dolphins, and Hawaiian Flowers.
  • Low-paying symbols: Standard card symbols (Ace, King, Queen, Jack, Ten).
  • Special symbols:
    • Scatter symbol – Triggers free spins and offers scatter payouts.
    • Wild symbol – Substitutes for all other symbols to form winning combinations except the scatter.


Below is a table of typical payouts for various combinations:

Symbol Combination Payout (Multiplied by Bet per Line)
Parrot 5 in a row x500
Dolphin 5 in a row x200
Scatter 3 anywhere Trigger Free Spins + x20


Island Heat features 30 fixed paylines, providing multiple opportunities to make winning combinations with each spin. Paylines are only valid from left to right, starting from the first reel. A minimum of three matching symbols is required to secure a payout, except for some high-value symbols which also provide a payout for two in a row. This structure helps ensure a steady stream of action and keeps the gameplay exciting.

Pros & Cons

Pros Cons
Low minimum bet of $0.01 suitable for all players. High variance may result in less frequent wins.
Features like Free Spins, Mega Symbols, and Gamble options enhance gameplay. Limited availability in some countries and casinos.
Accessible on multiple devices thanks to HTML5 technology. The maximum bet of $45 might be low for high rollers.

Minimum and Maximum Bet

The Island Heat slot offers a flexible betting range that caters to a variety of players. The minimum bet is set at a very accessible $0.01, allowing newcomers and those with limited bankrolls to enjoy the game without a significant investment. On the other hand, the maximum bet can go up to $45 per spin, which provides ample opportunity for seasoned players to make larger bets in pursuit of higher payouts.

Game Jackpot

Island Heat boasts a substantial jackpot of up to 250,000 coins, offering players the chance to win significant amounts. The game operates with a Return to Player (RTP) of 95.04%, which is around the industry average, providing a fair balance between the casino’s edge and the player’s winning potential. Additionally, the slot features medium variance, which means players can expect a balanced mix of frequent smaller wins and occasional larger payouts, making it suitable for different playing styles.

About Provider

Greentube, the developer behind Island Heat, is a renowned name in the online casino industry. As a subsidiary of the larger Novomatic group, Greentube specializes in bringing engaging and innovative online slot games to players around the world. They are known for their detailed graphics, creative themes, and robust game mechanics, making them a trusted provider for casino operators and a favorite among players. Their commitment to quality and entertaining gameplay is evident in the popularity of their games across various gaming platforms.

How To Play

  1. Load the Game: Start by opening Island Heat on your chosen device. The game is compatible with desktop and mobile platforms.
  2. Set Your Bet: Adjust your bet level using the plus and minus buttons. Bets range from $0.01 to $45 per spin.
  3. Understand the Paytable: Review the paytable for information on paylines, symbols, and bonus features.
  4. Choose Spin or Autoplay: You can manually spin the reels each time or use the autoplay feature to set a number of automatic spins.
  5. Watch for Special Symbols: Keep an eye out for Wild and Scatter symbols as these can trigger additional bonus features like free spins or the gamble option.
  6. Collect Winnings or Gamble: If you win, you can collect your winnings or opt to gamble them for a chance to double your payout in a risk/reward mini-game.


Island Heat by Greentube offers an engaging slot experience with its tropical theme and a plethora of features that cater to different types of players. The flexible betting options, the substantial jackpot, and the medium variance make it a versatile choice suitable for long sessions and various strategies. While the game’s RTP is average, the potential for big wins through the free spins and mega symbols, along with the thrill of the gamble feature, adds a layer of excitement. Overall, Island Heat is a solid choice for players looking for a balanced and entertaining slot game.