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Go on an epic voyage with the Io online slot and discover Charged Wilds, multipliers, and precious minerals worth up to 5,000x your stake!

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Io Slot Game Overview

Bet sizes available in the Io slot game range from £0.20 up to £4 on Wizard Slots casino.

The gameplay takes place across 6 reels and 4 to 8 rows, with up to 262,144 ways to win.

Winning combinations form if you land 3 or more matching symbols consecutively, from left to right.

How to Play the Io Slot Game

Io is an otherworldly slot game with stunning visuals and a relatively simple interface. It was developed by casino slots developer ELK studios and may sometimes be referred to as the 'io' slot.

On your left-hand side, below the reels, is the Stacked Coins symbol. Click on it to select your stake. Then, choose from a minimum of £0.20 up to a maximum of £4 per spin.

Press the big Spin button on the right corner to start spinning the reels.

However, if you need more information about the game before you start playing, click on the 3-bar Menu button on the top left.

That will open up the paytable, game's rules (i), and settings where you can turn the sound on or off.

Wild Symbol 

The wild symbol can substitute for other regular symbols and can help you complete potentially winning combinations.

If they form a winning combination of a 6-of-a-kind, you receive a payout equal to the highest-paying symbol.

Charged Wild

The Charged Wild is a special wild symbol that lands with 4 lives. It loses a life if it contributes to a win. Then, once all the lives have been used, it vanishes off the grid.

Avalanche Feature

If you manage to form a winning combination, the Avalanche feature will be activated and will remove all symbols that were part of the winning combination from the grid. However, if a Charged Wild is part of this combination, it will remain on the reels.

New symbols will then drop in to fill their places. During this feature, the grid may also get additional rows, up to 8 rows. The feature continues until no more winning combinations can be formed.

Wild Forge

Another special wild symbol of this game is the Wild Forge symbol. If you manage to land it, it will fill any space below it with a wild multiplier. However, if it lands at the bottom reel, it becomes a wild multiplier. 

Whenever the Wild Forge symbol is used to complete a winning combination, the multiplier wild's value increases, and there is no limit to the value the multiplier may reach.

Laser Feature

The laser feature is activated when the laser symbols' light beams intersect. Then, the symbols in the light beam path turn into wild symbols.

However, a single laser beam can remove all regular symbols along its beam.

Free Drops Bonus Game

You can trigger the Free Drops Bonus game if you land 3 'Bonus' scatter symbols. Then, the grid will increase in size to an 8x8 grid.

This awards you at least 7 free drops with up to 6 bonus symbols on the grid. Any Wild Forge or Charged Wild that lands is collected and remains sticky at the bottom of the reels for the duration of the feature.


Return To Player (RTP): 96.0%

The RTP is a theoretical value and is shown as a percentage. It’s used to describe the percentage of money wagered a particular casino game may pay back to players over a certain period of time.

For example, if a game had a RTP of 92%, in theory, this would mean that for every £100 wagered, the game could return £92 back to players in potential winnings. However, it is important to note that winnings are completely random, and players are not guaranteed to receive this.

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*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.