ELK Studios
4 Ratings
Ways to Win262144
Max Win5000x
Min/Max Bet0.2/100


ELK Studios

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iO by ELK Studios released on 02.06.2020ELK Studios released on 02.06.2020 is a 6-reel & 4-row online slot with 4096 ways to win and a 96% RTP. This is a space-themed game offering players a max win of up to 5000x their stake. iO can be played on all devices from €0.2 to €100 per spin and is considered a medium volatility game.


Community Big Wins

Special Features


You will see that IO has a volatility of medium to high while the RTP is set at a 96%. In total you will be seeing 3 different wild symbols, a standard, Charged and a Forge Wild. These are also two of the features found in the game as well as a Laser feature and the Bonus Game triggered by the scatter symbols of the slot.

There are quite a number of special features to look out for in IO, in fact there is a total of 5 features. Of course we have the Avalanche engine, also known as the Gravity mechanics. In addition to this you will see Charged Wilds, Wild Forges, a Laser feature and of course the Bonus Game.

Gravity Mechanics

With each winning combination you get on the reels, you will be seeing the Gravity Mechanics in action. The winning symbols will explode and make way for new symbols to come into place. After this, a new row is added, meaning you will get even more ways to win. Then the whole process will simply be repeated if you happen to get another winning combination. The amount of rows can be increased up to 8, which will end up giving you 262 144 ways to win.

Laser feature


Keep an eye out for lase symbols landing on the reels. Should the laser beams of 2 laser symbols cross each others paths, the the Laser feature will be triggered. When this happens, the Laser as well as the Regular symbols along the laser beams will be turned into wilds. One single Laser symbol will simply remove itself and all symbols along the laser beam.

Charged Wild feature

One of the three wilds in this slot is the Charged Wild, which also happens to be connected to the Charged Wild feature. This symbol works similarly to a sticky wild, but in this case the Charged Wild had 4 lives it will be useful for. As soon as it is part of a winning combination, it will loose a life and when all 4 lives have been used it will disappear from the reels. A Charged Wild will also be able to substitute all regular symbols in the slot.

Wild Forge feature

Wild Forge feature IO

Another wild in the slot is the Wild Forge symbol. This wild symbol will be able to fill an empty space below a multiplier wild on the reels. For every time a Wild Forge symbol is used on the reels, the value of the multiplier will be increased. After this, the Wild Forge symbol will turn into a multiplier wild itself as soon as it has reached the bottom of the reels.

Bonus Game feature

The main feature of the IO slot is of course the Bonus Game feature which involves free spins. This feature will be triggered as soon as you land 3 bonus scatter symbols on the reels. When this happens, you will be rewarded with 7 free spins and the reel set will expand to 8 rows and therefore giving you a total of 262 144 ways to win.

What makes this feature even better, is the fact that you can re-trigger it should you land 3 or more scatters on the reels again, where you will receive another 7 free spins, meaning you can get a total of 14 free spins. Both Charged Wilds and Wild Forge symbols will be collecting at the bottom of the reels in between each free spin, meaning your winning potential will be increased. This will also allow multiplier wilds to appear on every free spin during the feature.

Design and Symbols

As already mentioned, IO is a space-themed slot. You will be embarking on a journey around the solar system from your casino space station. Your course is set to the fourth largest moon of Jupiter, IO. The IO moon is supposedly a volcanic marvel and you are bound to discover many invaluable minerals during your stay there. You will be seeing the solar system as the background of the slot, with a giant planet in the centre and lots of twinkling stars surrounding it. The mood is definitely set, but the graphics and design overall is pretty basic.

The symbols you will be seeing on the reel set have all been designed as circles, with a total of 8 regular symbols in play. With 4 low-value symbols showing the standard playing cards J, Q, K and A and the high-value regulars showing you stars, diamonds, four leaf clovers and the classic lucky red 7s. The last symbol mentioned is also the symbol of highest value, giving you x5 your total stake for 6 matching symbols on the reels.

As well as the 8 regular symbols, you will of course be seeing the special symbols of the game. The wild symbol is simply represented by a golden “W” and can substitute all regular symbols while the Charged Wild will have 4 green fields surrounding the “W” and the Wild Forge will be accompanied by a multiplier. The scatter symbol of the game will trigger the Bonus Game feature and is represented by a planet with the wording “Bonus”.

Our Thoughts on IO

Big win on IO

IO is the perfect slot for you if you are looking for something simple while still having some fun features going on. Elk Studios have decided to go with a space-themed slot this time, with clear influence from their Cygnus slot in terms of the Gravity Mechanics. However, they have kept the graphics and design very basic, which is pretty disappointing, seeing there could have been so much done with a space slot.

Of course the special features of the game are what really bring it to life, with a total of 3 different Wild symbols, a Laser feature and the Bonus Game feature that can be re-triggered. You will be able to get the biggest wins of the game through the free spins feature, however the maximum win is still at a low of 5 000x your stake, even though this is the standard with other ELK games. All in all IO is an entertaining slot, even while being pretty simple.

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