Champion of the Underworld

by Yggdrasil

It's time to gather for the fight of the century as all the greatest and scariest warriors of the Underworld battle against each other to see who can remain victorious.

Champion of the Underworld is developed by Yggdrasil and takes players deep into the Underworld. With Gigablox, free spins and Wild Fight, players will soon be crowned the winner in no time.

Slot information

RTP: 96.00%
Volatility: High
Max Payout: 10,000x stake
Reels: 6
Paylines: 4,096
Jackpot: No
Min Bet: 0.20
Max Bet: 100.00
Category: Gigablox slots
Themes: Horror, Mythical
Release Date: 6th Oct 2022

Our rating

“ Stand victorious in Champion of the Underworld ”

4.1 out of 5

Win potential

Play Champion of the Underworld

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Champion of the Underworld Screenshots

Champion of the Underworld Features

This slot has three main features: Gigablox, Free Spins and Wild Fight. The Gigablox is a fan-favourite with Yggdrasil leading to larger symbols that can be between 2x2 to 4x4. These symbols can also host the free spin scatters.

This slot is quite unconventional as 5 scatters are needed to trigger the Free Spins round. You will be awarded as many spins as Free Spins symbols you land. Each successful Wild Fight adds +1 point to the multiplier in free spins and awards 2 extra spins when it reaches the next level.

When a monster symbol lands with Hades, it may trigger Wild Fight. Every monster that is defeated will turn into a wild and this applies to Gigablox as well.

It's worth mentioning that in free spins, players can gamble for even more spins. This does come at the risk of losing everything else though.

Finally, there are two bonus buy options to purchase the base game free spins or the enhanced free spins round. However, these are not available to UK players.

Champion of the Underworld - Gigablox


During the base game and free spins round, large symbols can land on the reels sized 2x2 to 4x4. This even applies to the free spins scatters!

Champion of the Underworld - Free Spins

Free Spins

If a player lands 5 or more scatters, then the free spins are triggered and each Wild Fight increases the multiplier.

Champion of the Underworld - Wild Fight

Wild Fight

At any point, Hades can battle monsters on screen. Every monster that is defeated will turn into a wild leading to even more wins.

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Champion of the Underworld Review

It's time for the most significant battle that this universe has ever seen in Champion of the Underworld. The most sinister and devious creatures must battle against Hades to see if they have what it takes to defeat him.

The champion will naturally be given a wealth of riches and the prestigious title of Champion of the Underworld. Developed by Yggdrasil, this mythical slot is all about Gigablox, Free Spins and Wild Fights that are sure to lead you to victory.


The first thing that will catch your eye with this slot is that it is both dark and beautiful at the same time. It's clear that Yggdrasil brought their A-game to this slot with top-tier designs.

When the slot opens up, players will find themselves in a battle arena in the Underworld surrounded by flames, skulls and the souls of the dead. As for symbols on the reels, they are all characters from the myths such as Medusa, Minotaur and many more which is befitting.

The music is interesting in this slot as between spins it feels like there is a steady and uneasy beat building up to spins. However, during spins, this turns into an epic rock score which is only good for a couple of minutes.


There are three core mechanics in this slot but they are all easy to comprehend. Firstly, Gigablox is just large symbols and Wild Fight just randomly adds in wilds. The Free Spins is pretty self-explanatory meaning that anyone can pick up this slot.

One thing that is frustrating is the user interface as Yggdrasil has gone for a minimalistic look with tiny menus at the bottom. It can be hard to see everything - especially the balance and bet level. Everything is available on this bar, but just be careful what you click.

Win Potential

The RTP for this slot is pretty standard at 96% which is a good thing to see. Following this, there is a high volatility level leading to larger wins but less frequently.

As for the maximum win, it's a steady 10,000x the stake which will certainly please players. This amount is achievable as well as it's not too ridiculously high. That's not to say that the win won't be satisfying, but it's certainly not at the crazy level of Nolimit City.

Our Verdict

This slot came out of nowhere and absolutely surprised us. When we opened up the slot, we didn't know what to expect but we were pleasantly surprised by what was on offer.

The gameplay, design and overall win potential in Champion of the Underworld are absolutely fantastic and found ourselves loving every minute...and we are certain you will too.

Charlie Vogelsang
Reviewed by Charlie Vogelsang Last updated on

As the Content Manager at Slot Gods, Charlie is focused on staying on top of the latest slot releases as well as finding the most recent trends. She spends her day searching for the best slots to be reviewed as well as managing most of the content that you will find on the site. Whether it’s the latest slot review from Relax Gaming or a guide on a brand-new mechanic, Charlie will be sure to have it covered on Slot Gods.

Learn more about Charlie here

Play Champion of the Underworld

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