IO is a massive slot game with some huge space features and challenges. It’s a 6 reel 4096-way slot play incorporated with some futuristic reward features and high pay structures. 


The IO slot begins with 6 reels, 4 rows and 4,096 ways to win. A winning combination is formed when 3, 4, 5 or 6 matching symbols appear from left to right on adjacent reels starting from the first reel. Symbols appear on round circles and include low value A, K, Q and Js.  There are also stars, 4-leaf clovers, diamonds and lucky red 7s. The lucky red 7 symbol is the most expensive shooting player 1, 2, 3 or 5 times your stake for 3, 4, 5 or 6 in combination. There is also a wild symbol which substitutes for all symbols mentioned. 


The Avalanche feature here is the primary one. Winning symbols explode to make way for new symbols coming in. Then a new row is added which gives the players more ways to win. The process repeats itself during the activation of another winning combination.

Bonus Features

Bonus Game feature is the bonus round. This is played when the players land 3 bonus scatter symbols. This will enable 7 free spins with 8 rows and 262,144 ways to win. The players can also retrigger the feature with 3 or more scatters to trigger another 7 free spins and 14 in total.


The game is a real charm when it comes to shooting features and bonuses. IO is a game for those who love space and space themed features.