Bonus Island

Bonus Island

Bonus Island is an online slot that is exactly how it sounds! An island-based online slot game where there are plenty of bonus features available that can potentially lead to big wins!

About Bonus Island

At UK Casino, we love slots that have bonus features at the heart of the game as demonstrated by Bonus Island! This online slot game is based on an exotic island as you would expect with the title, where there are plenty of bonus features to be won. This includes free spins, a mystery boost and a Bonus Island feature that is exclusive to this slot game. The layout of Bonus Island is that of a reels grid containing 6 reels and 5 rows, meaning there are plenty of chances to win big! The aesthetics of this slot are also dominated by the island theme, as they make up some of the symbols on the reels as well as the visual background of the slot.

How to Play Bonus Island


Before playing Bonus Island, set yourself a stake that you wish to bet. You can do this by adjusting the arrows above the coin images situated to the left of the reels grid. Please note that you have the option to adjust your stake to suit you at any time during the game.


Once you are ready to play, start the game by clicking the spin button on-screen. If you wish to use the autoplay function, select the autospin and choose the number of spins you wish to be spun automatically. The autoplay function in Bonus Island also comes with loss limits that will stop the game if they are reached.

Bonus Island Bonus Features

Mystery Boost

Different symbols can appear on the reels at any point during the game. If a transform symbol lands on the reels when there are mystery symbols also on the reels, these will be transformed into other symbols that may lead to wins being formed.

Coin Bonus

The Coin Bonus feature is triggered by mystery symbols transforming into coins. Any coins that have cash will award cash prizes once the reels have stopped spinning.

Bonus Island Feature

Four or more winning cascades will award the Bonus Island feature. Four consecutive cascades will award the bonus, five consecutive cascades will award the mega bonus, whereas six or more consecutive cascades will award the epic bonus.

Free Spins

Free spins are part of the Bonus Island feature and contain an unlimited win multiplier that increases during every cascade that awards the bonus feature. Any winning combinations from the free spins bonus will be multiplied by the current multiplier at the start of the winning cascades that initially awarded the Bonus Island feature.