Game description


IO (ELK)IO is a great title from ELK and one that follows closely in the footsteps of another of their previous slot known as Cygnus.

ELK has used space as the theme of this video slot, and after playing it severally, here is my review of IO:

Game Set-Up

One of the things that I was quick to note is the high volatility of the game.

For its setup, ELK has used 6 expanding reels that have the ability to deliver between 4096 and 262,144 ways to win.

In addition to the wild symbols, IO has other features like the Wild Forge (comes with multipliers), bonus symbols, as well as Charged Wilds.

Betting and Prizes

Elk Studios seems to have a particular betting range for most of their slots, which is $0.20 to $100 per spin.

IO offers a pretty large game area, with lots of ways to wins, and I can rank it in the level of the Megaways slots.

It is a slot with great payout potential, and as much as 5,000x the stake ($500,000), is possible here.

Naturally, it’s common for huge rewards to be accompanied by higher risk, and this is the case with IO. It’s a highly volatile game, but with its RTP of 96%, you will be cushioned from making huge loses.

IO Slot Features

For every win that you form, dropping symbols will be triggered, after which the winning symbols will be removed, and new ones formed. However, the Charged Wilds will not be affected.

Each new symbol that appears will increase the number of rows, which in return increases the ways to win.

Wild symbols serve as a substitute, and you can use them to replace the regular symbol.

I love free spins, and with the help of the scatter symbols, I was able to enjoy a few of these features.

To receive the scatter symbols, I was required to get 3 Bonus scatters, and this increased my chances of accessing the free drops, which in return gave me the Wild Forge symbols as well as the Charged Wilds.

Charged Wilds have 4 lives/uses, when they form part of a winning combo, they will spend these lives, and on spending their fourth life, they will be transformed into regular wilds.

Wild Forge will come along and bring multiplier wilds to the available empty areas. When you continually use the forge multiple times, you boost the value of the multiplier. On reaching the bottom part, the Wild Forge will be transformed into a multiplier wild.

Theme & Design

The background graphics present on IO gives the impression of Space. It’s a very interesting design, but I was surprised that ELK has not used any sci-fi themed symbols here.

What you get is a Bonus Planet, Diamonds, the Wild logo, Clovers, Lucky 7s, Blue Stars as well as some Royals.


IO is an excellent slot machine, and I love the graphics and general design that has gone into it.

Despite its high volatility, it’s a slot with great potential, and I can recommend it to all levels of players.

UPDATED ON: by James Worden