Io Slot Review – A Mission to the Unknown

Io slot review will take you on a space station for a trip to Space and will show you how big is the potential of this game. ELK Studios is the software developer and this one is another great hit with a sci-fi theme. In this highly volatile slot, you start with 4096 ways to win and they can go up to 262,144. The game includes 3 wilds that are on your side, gravity avalanche mechanics, a special laser feature for bigger wins and Free Spins play with 8 rows. With so many features, there is a reason to be excited because this will be an interesting mission. Io RTP is 96%, and the maximum win of the slot is set to 5000x your bet.

Io Slot
100% Up to £100 + £88 Free Play
Full T&Cs apply. 18+ No Deposit Offer : New players only • £88 is granted in FreePlay (FP) • FP must be claimed within 48 hrs of receiving the email and expires after 14 days • FP wins are credited as bonus and capped at £15, exc. JP win • Deposit Bonus Offer: £20 min deposit • 100% up to £100 Bonus • Bonus wins are capped at £500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days • Restrictions apply to deposit until wagering requirement fulfilled • Wagering req. vary by game • This offer may not be combined with any other offer • Withdrawal restrictions & full T&Cs apply: No Deposit Offer terms & Deposit Bonus Offer terms.
Slot Rating 4.80/5
Slot Io
Reels and Paylines 5 Reels, 4096 – 262,144 Ways
Slot RTP 96.00%
Type of Rewards Fixed Rewards
Slot Software ELK Studios
Similar slots Cygnus, Planet Fortune
Top Slot Casino 888casino.com
Slot Bonus 100% Up to £100 + £88 Free Play
Release Date 02/06/2020

Io by ELK Studios

Play Io Slot!

Last Updated on 19 Feb 2021 by Keira Miller
Page Contents:

On this page, we have everything that you want to know about the Io slot machine. There are many interesting features and we have all the highlights that you need. We will talk about how to trigger all the extras and what payouts to expect. We will explain the symbols and which are the important ones. You can even try the game for free on our page and we also have the names of the best casinos where you will find to play Io online slot for real money.

Best Io Sites for 2021

  1. 888 Casino (Best for First Class Quality Slots)
  2. Leovegas (Best for Playing Io on Mobile)
  3. Grand Ivy (Best for Welcome Bonus Offer)
  4. Party Casino (Best for Diversity of Games)
  5. Netbet (Best Reliable Brand)

Top Io Casinos to Play for Real Money

You will be able to find the slot at several casinos. The theme is kind of unusual and very interesting, and an important feature for all the gaming lobbies is the variety in their slot selection. We have researched many brands and some of the best names on our list are 888 Casino, LeoVegas and Grand Ivy. There are some more and you can check them all below and see if you will find a favourite among them. Here are the top Io casinos for 2021:

Top ELK Gaming CasinosWelcome BonusFree SpinsAll GamesPayoutRatingSecure Link
£100 + £88 Free Play021996.60%
5.00 ★ out of 5
888casino.comFull T&Cs apply. 18+ No Deposit Offer : New players only • £88 is granted in FreePlay (FP) • FP must be claimed within 48 hrs of receiving the email and expires after 14 days • FP wins are credited as bonus and capped at £15, exc. JP win • Deposit Bonus Offer: £20 min deposit • 100% up to £100 Bonus • Bonus wins are capped at £500 • To withdraw bonus & related wins, wager 30 x (bonus amount) within 90 days • Restrictions apply to deposit until wagering requirement fulfilled • Wagering req. vary by game • This offer may not be combined with any other offer • Withdrawal restrictions & full T&Cs apply: No Deposit Offer terms & Deposit Bonus Offer terms.
£100 + 20 Wager-Free Spins2061096.00%
5.00 ★ out of 5
leovegas.comClick for full T&C’s. Free spins - no deposit required & new players only. Claim within 3 days of registration & 3 day expiry. Free spins worth £0.10 each on Book of Dead, winnings paid as cash. Deposit offers available across any two deposits. Both expire 7 days after registration & have 7 days to wager once claimed. Deposit £10, £25 or £50+ & wager 35x for a cash reward. Only cash stakes qualify & wagering contributions vary. 5 free spins on Book of Dead with each qualifying deposit, 3 day expiry. BeGambleAware.org
£1500 + 100 Free Spins100500+95.70%
5.00 ★ out of 5
grandivy.comFull T&Cs apply. 18+. New players only. One bonus offer per player. Minimum deposit £20. Max bonus bet is £5. Bonus spins on selected games only and must be used within 72 hours. Bonus funds must be used within 30 days otherwise any unused bonus shall be removed. Bonus funds are 100% match up to £300 on your 1st deposit, 25% match up to £800 on your 2nd deposit, and 50% match up to £400 on your 3rd deposit. Bonus funds are separate to Cash funds, and are subject to 35x wagering the total bonus & cash. Only bonus funds contribute towards any wagering requirements. Terms apply. BeGambleAware.org.
120 Spins On 1st Deposit1202050+95.35%
4.85 ★ out of 5
casino.partycasino.comFull T&Cs apply. 18+. New depositors only. UK residents only. Minimum deposit £10. Free Spins are valid only on Starburst and expire in 7 days. 10x wagering apply. Certain deposit types are excluded.
500 Free Spins On 1st Deposit1067796.00%
4.85 ★ out of 5
casino.netbet.co.ukFull T&Cs apply. 18+. *New players, £10+ deposit, no e-wallets/prepaid cards, 50x wagering on Vegas Free Spins, 40x wagering on Casino Free Spins.

When we recommend a casino for our readers, it is important for us to know that the brand is legit. All of the casinos in our list meet the regulations from the authorities and are supervised by the gambling commissions. Another important factor is the rating that the players have, and the brands that we have chosen are having great ones. Also, all of the names on our list have great promotions and you can take advantage of this. We suggest you check the the finest UK slot sites for 2021 and find out more about them.

Play Io for Free

The game has a lot to offer and we suggest you first try the demo version of the Io online slot. That way, you will get to know the gravity avalanche that the game uses. You will also see how all those wild symbols differ from each other and how they work.

ELK Studios offers 4 betting strategies and you have enough free credits to try all of them and see if you want to use anyone when you play for real money. The demo version is pretty much the same as the regular one, so it will be like playing for real.

Io Slot Free Demo

Instant play

When you are ready to play the game with real money, we recommend you to head over to our LeoVegas casino review and find out more about the brand. The rating of the place is very good, and you will find some of the well-known software providers there.

The casino offers more than 500 games, not only slots but also roulette, blackjack and live dealer tables. Their welcome offer is quite good, and when you decide to open an account, they will match your deposit and will also give you some wager-free spins.

Gravity Winnings in Io

Io slot has very beautiful graphics and the playful soundtrack is the perfect addition to the overall feeling of the Space theme. The grid consists of 6 reels and 4 rows and all symbols are round, so they are in a zig-zag position. The game has gravity mechanics with an Avalanche feature. This means that after every win, the winning symbols will be replaced with new ones and some of the existing ones will fall either left or right.

Also, after every win, an additional row will be added, up to a total of 8, and this increases the ways of winnings. The autoplay and quick spin options are also available. There are no paylines involved because you start with 4096 ways of winning, and they can increase to 262,144. Besides the Free Spins, there is no bonus round, but there is a special Laser feature together with 3 different Wilds. All those extras make the game even more appealing to the player.

Special Symbols and Some Payouts

As we mentioned earlier, all symbols are round and you will see regular Red 7, Star, Diamond and Flower together with the playing cards images J – A. There are three wild symbols, W is the regular one that substitutes for all symbols, except the special ones. Charged Wild and Wild Forge are the Wild features and we will explain about them later.

The highest paying symbol is the Red 7 and how much it will pay depends on your total bet. If you have a bet of 1 per spin, Red 7 will give you 10 for 6 matches. J – A are the low-value symbols. You also have a Bonus symbol which triggers the Free Spins.

Io Slot Paytable
Advantages:
  • Free Spins
  • 3 Wild Symbols
  • Multiplier
  • Interesting Features
  • Gravity Cascading Symbols
  • Very Captivating
Disadvantages:
  • No Jackpot
  • No Bonus Round

The slot has a good betting range. The minimum starts at 0.20 and the maximum is 100. It is a good fit for the high rollers and for those on a lower budget. There is no progressive jackpot, but the maximum win is 5000x your bet and this is quite generous.

You will also see 4 different betting strategies, which don’t reflect the outcome of the game. They give you the possibility either to raise your bet after a win or a loss, or to bet a set percentage of your remaining balance. If you want to try any of them, you have to set this before you start playing.

Free Drops, Wild Features and Laser Beams

In Io online slot, you have the Free Spins and few very interesting features. You need 3 Bonus symbols to trigger 7 free drops. You will play with 8 rows, not 4, as in the base game. Charged Wilds and Wild Forge symbols will be collected at the bottom in the Free Spins to give you more chances of winning. You can also retrigger 7 more free drops if you get another 3 Bonus symbols. Charged Wilds is also a W symbol, but it has 4 lives. It substitutes for any symbol and is losing a life if it makes part of a winning combination.

Wild Forge carries a multiplier beginning at 2x and also substitute for any symbol. It fills an empty space below itself, and every time that is part of a winning combination, it will move one space down and the multiplier will increase. The other interesting feature in the game is the Laser. If you hit two of those anywhere on the grid, the beams of the two Lasers will connect and all symbols along the line will turn into Wilds.

Io slot RTP is 96% and it has more of high volatility. The percentage is good and you will get those avalanche gravity mechanics pretty often. The Free Spins are a little hard to get to and they don’t hit very often. The game has a hit frequency of 24.6%, so statistically, every fourth spin should come with a payout.

You will get small winnings of the regular symbol combinations, but when those rows start to expand the winnings are getting bigger and bigger. Also, if you get a combination of only Wilds, the payout will be the same as the highest paying symbol.

Play Io on Mobile

If you want to try the game anywhere and to use your mobile, it is possible. ELK Studios are always taking care of the mobile users and all of their games are ready for a mobile play. You can use either a phone or a tablet. Any operating system will do the trick. On the mobile version, you get everything as expected. You will enjoy the same good graphics, beautiful colours and the expanding rows will fit pretty good on any screen.

Here is the best Io mobile casino:

Up to £100 + 20 Spins
  • Native App
  • Intuitive Platform
  • Good Rating
Click for full T&C’s. Free spins - no deposit required & new players only. Claim within 3 days of registration & 3 day expiry. Free spins worth £0.10 each on Book of Dead, winnings paid as cash. Deposit offers available across any two deposits. Both expire 7 days after registration & have 7 days to wager once claimed. Deposit £10, £25 or £50+ & wager 35x for a cash reward. Only cash stakes qualify & wagering contributions vary. 5 free spins on Book of Dead with each qualifying deposit, 3 day expiry. BeGambleAware.org

Io slot review has one name for you if you are looking for a mobile casino to play the slot and this is LeoVegas. The mobile platform is very easy to use and you will get the same feeling as on desktop. The casino also has an app that you can download from Google Play or App Store. If you don’t want to get the app, you can access the site, straight from your mobile browser.

You will find more than 400 games to play on the mobile version, including slots, table games and live casino. There is also a welcome bonus that will match your deposit. Have a look at our LeoVegas mobile review and discover what else you will find.

Final Words and Recommendations

We recommend you to try the Io slot and see how exciting it is. You can also check Cygnus, the first ELK game with gravity mechanics. The action takes place in Egypt, and you will also get some Free Spins there with sticky Wild. If you want the same theme, but with a retro look, check Planet Fortune. It is a high volatility game with 5 reels and a futuristic space feeling. We have other slots that will surely please you with bonuses, and you can find all of them on our slots list.

Rating:
4.8/5
Powered by:
Play’n Go
Play at:
Fun Casino
Rating:
4.9/5
Powered by:
NetEnt
Play at:
Casumo
Rating:
4.5/5
Powered by:
NetEnt
Play at:
LeoVegas

Io slot is a pretty good game and it is worth checking it out. You will find many different features that have great winning potential. From the Free Spins, Avalanche Gravity, expanding rows, 3 Wild symbols, Laser feature and all those ways of winning it is going to be one interesting and exciting adventure. Embark the space station, and hopefully, the luck is going to guide you to the maximum possible win.

Popular Questions

At the end of our Io slot review, we have chosen some of the most popular questions about the game. We left a short answer and if you want to know more, just follow the link on each question.

✅ Where can I play Io?

You can play the game in a lot of casinos. It has a very interesting theme, and there are many brands that have it. Some of the casinos that we recommend are 888 Casino and LeoVegas. You can check all of the brands on our top casinos’ list.

❓ What is the Io RTP rate?

The RTP of the game is 96.00% and has medium to high volatility. The game has a good maximum payout of 5000x your bet. You can read a little bit more about the slot and what features are included.

🎁 Does Io come with a special bonus round?

Besides the Free Spins, there is no special bonus round. There are few great features that make up for the missing bonus round. You can read more about how to trigger the free spins and the other features.

⭐ What are the best Io casinos?

The best casinos to play the slot are 888 casinos, LeoVegas and Grand Ivy. You can have a look at all of the names that we have included in our top 10 of the best casinos.

💻 What is the Io software developer?

The software developer of the slot is ELK Studios. They have so many good slots and they did a great job with the graphics in this one. You can read about them and other top software brands in the iGaming industry.

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