RTP 96.00%
Volatility Medium-High
Reels 6
Paylines 4096
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IO Specifications

Launch DateJune 2nd, 2020
SoftwareElk Studios Software
Game typeVideo slot
ThemeSci-Fi & Futuristic , Space
RTP96.00%
VolatilityMedium-High
Reels6
Paylines4096
Max Wager (per line)100
Max Jackpot500000
Bet range0.20 – 100.00
Paylines typeFixed
SymbolsWild Symbol
Bonus featuresFree Spins
Progressive JackpotNo
Practice PlayNo
AutoplayYes

Journey in to the cosmos in IO from slot developer ELK Studios. Travel to one of Jupiter’s moons where charged Wilds, bonus game features, free spins, wild forge symbols help find possible wins of up to 5,000x your stake.

About

IO is a medium to high variance video slot with RTP set at 96%. Played across 6 reels and 4,096 ways to win, stakes range from 20p up to £100 per spin across all devices. The graphics are well designed and a pleasant soundtrack fits the cosmic theme well.

The reels are set against a huge window looking out into space and the solar system beyond. Symbols are held in a large portal and include J-A royals, clovers, stars, diamonds and lucky 7s which are the highest paying symbols and award 5x your stake for 6.

The Wild is a W symbol and substitutes for all other symbols.

Gameplay and Features

The game utilises the avalanche mechanic, after a win, symbols fall to the left or right and every win will add an extra row which increases the ways to win to 262,144. Winning combinations are found when 3 or more matching symbols are found. There are 4 bonus features, these are:

Charged Wild feature – Charged Wild symbols substitute for all other symbols and when they appear, they will help towards 4 winning combinations, then disappear from the reels.

Wild Forge feature – the wild forge symbol will fill an empty space with a multiplier wild, this multiplier will increase each time the wild forge is used. When the wild forge reaches the bottom of the reels, it will change into a multiplier wild.

Laser feature – this feature triggers when beams from laser symbols cross. All the symbols along the laser line as well as the laser symbols turn in to wild symbols

The Free Spins feature triggers when 3 or more scatters land awarding 7 free spins and uses 8 rows with 262,144 ways to win. The feature can be re-triggered with 3 more scatters. During this feature charged wilds and wild forge symbols are collected

IO is a decent looking game, the background is quite dark but symbols add a splash of colour. The slot uses the avalanche mechanic and is easy to play, I enjoyed the extras. The laser feature adds wilds and multiplier wilds but you will find the best wins come from the free spins with up to 262,144 ways to win and the wild forge symbols with multipliers to give a possible 5,000x your stake.

 

Becky M.
Founder & Editor-in-Chief at Slotfruit

Rebecca (Becky) Mosley has been at the heart of the UK online gambling industry since 2008 – making her one of the most experienced voices in the space. She founded Take Marketing Limited and built SlotFruit.co.uk into one of the longest-running independent casino comparison sites in the country.

As editor-in-chief, Becky brings a genuine player-first perspective to everything on the site. She personally oversees every casino review and slot guide, making sure readers get straight-talking, honest information rather than marketing fluff. Her approach has always been the same: transparency, fair bonus terms, and responsible gambling above all else.

Over 17 years in the industry, Becky has built deep expertise across UK Gambling Commission licensing, slot game mechanics, bonus structures, and the constantly evolving regulatory landscape. She works directly with operators and software providers to keep every listing accurate and up to date.

Becky is a Companies House registered director (Take Marketing Limited, company no. 07619813) and is based in Lincolnshire, England.

The numbers on IO

RTP 96.00%
Higher than 41% of the 5,726 slots we hold a figure for
Where you can play it 27 casinos we have confirmed carry it
More widely stocked than 89% of the slots we track
Volatility Medium To High Not better or worse, just how the wins are spread. Higher means rarer but bigger.
See all Elk Studios Software casinos →

More slots like this

Slots with a similar theme, series or studio. These links go to our reviews, not to a casino.

The numbers on IO

RTP 96.00%
Higher than 41% of the 5,726 slots we hold a figure for
Where you can play it 27 casinos we have confirmed carry it
More widely stocked than 89% of the slots we track
Volatility Medium To High Not better or worse, just how the wins are spread. Higher means rarer but bigger.