Champion of the Underworld Review

From Yggdrasil Gaming

It’s battle time in this high variance slot as Hades takes on a group of monsters in an underworld arena, earning you wilds and multipliers when victorious. Play on 6 reels with 4,096 paylines for a 10,000x top win. Wild Fights pepper the base game, and 4x4 Gigablox enhance the paytable on each spin. Free spins come with Wild Fights on every spin and victories increase your multiplier up to 25x. Play from 20p.



Name:  Champion of the Underworld

Developer:  Yggdrasil Gaming

Paylines:  4,096

Reels:  6

Rows:  4

RTP:  96%

Variance:  High

Top Payout:  10,000x

Jackpot:  No

Release Date:  October 2022

Features:  Wilds, Progressive Multipliers, Gigablox, Free Spins, Wild Fights

About This Slot

In a continuation of their ‘Underworld’ series which began with Hades Gigablox, Yggdrasil are returning us to a dark and dangerous subterranean world inhabited by belligerent monster intent on doing each other harm. Like their best games, Champion of the Underworld is a striking and atmospheric slot laden with portent and backed by a sinister soundtrack. If you enjoyed Hades and games like the Vikings series, you should love this one too.

The backdrop to the action here is a kind of gladiator-type fight arena where each of the monster vies for supremacy. Hades is your beast, you want him to prevail each time as he takes on all-comers, adding wilds and multipliers to the reels when he wins. Its fearsome stuff and a cool concept in keeping with Yggdrasil’s style to date.

In this review we will uncover the key stats, show you which features are important to help you drive up your wins, and show you where you can play this slot right now.

Champion of the Underworld was released on October 6th 2022 and can be found at most top slot sites in the UK.

RTP, Variance and Top Payout

The RTP of Champion of the Underworld is bang on 96% which is about average for an online slot game.  This isn’t the highest paying Yggdrasil game – you can get a better return on Jokerizer at 98%, Beauty and the Beast at 97.1% and 9k Yeti and 97%.

This is a high variance slot where you can expect the best wins in the free spins round where the feature are dialled up with more frequent Wild Fights and the chance to increase you progressive multiplier as high as 25x.

The top win in Champion of the Underworld slot is 10,000x. This is a decent value payout but there are better on offer from this studio. You could try Vikings Go Bezerk Reloaded at 25,000x or Hyper Burst at 12,800x.

Spins start at 20p per play.

Symbols and Graphics

Rich in graphics, as we have come to expect from Yggdrasil, Champion of the Underworld features some terrifying ghoulish monsters on the reels. Symbol values aren’t that great, but keep in mind they can super-size and 25x multipliers are possible which will boost your wins considerably.

Here are the main features of the paytable.

  • This is a 6 reel and 4 row slot with 4,096 paylines on each spin. You’ll need to land 3 or more identical symbols on adjacent reels from left to right, regardless of row position, starting with the left-most reel to score wins.
  • This game includes Yggdrasil’s Gigablox feature – reels merge to create 2×2 and 4×4 symbols which pay out as if 4 or 16 identical symbols are in play.
  • There are 4 low paying symbols made up of the card suits, diamonds, hearts, spades and clubs. The highest pay out here is 1.5x for six on a line.
  • There are 4 premium monsters. These are in blue, green, purple and red. They pay out a max of 2x for 6 on a line.
  • Check out the wilds which are skulls and will sub in for any other to form wins in both base game and bonus round.
  • And you’ll need 5 or more scatters to unlock the bonus round.

What We Like

  Epic fantasy theme with big battles
  Progressive multipliers up to 25x
  High 10,000x top win
  4x4 Gigablox

What We Don't Like

  Similar to other Yggdrasil slots

Gameplay and Features

Base game spins are enhanced by inter-reel fights and free spins come with progressive multiplier action. Here is how it all works.

Wild Fights Turn Symbols Wild

In the base game, look out for the fight that launch at random. Hades will turn on all pay symbols appearing on the reels. When he does, if he prevails then the pay symbols transform into WILDS!

NOTE: even Gigablox super-sized symbols can turn wild in this way.

Free Spins With Gamble Option and Progressive Multipliers

You’ll need to land 5 or more scatters (which may also come as Gigablox) to unlock the free spins round. You get 1 free spin for every scatter.

Ok, now you also get the chance to gamble your total free spins for more. If you take the gamble option you must choose a sword from a collection of 10. Gold swords award you more spins, broken ones bring the feature to an end.

And … during free spins the action cranks up a notch because there are Wild Fights on EVERY spin. Keep pushing Hades to win those battles because victories will help increase your win multiplier every time.

Here is how that works:

  • 9 wins gets you a 2x multiplier plus 2 more free spins
  • 11 wins gets you a 3x multiplier plus 2 more free spins
  • 13 wins gets you a 5x multiplier plus 2 more free spins
  • 15 wins gets you a 10x multiplier plus 2 more free spins
  • 17 wins gets you a 25x multiplier plus 2 more free spins

More Games Like Champion of the Underworld Slot

Here are two more games to try if you enjoy this one.

Hades Gigablox – the original Underworld slot from Yggdrasil is this one. It comes with the same RTP at 96% and a slightly higher top win potential at 11,129x. The variance is lower at medium suggesting more frequent payouts too. The Gigablox are also larger in size with 6×6 symbols a possibility. Just like in Champion, in this game Hades’ wins land you extra multipliers in the free spins round too. Epic fun!

Vikings Go Bezerk ReloadedIf you like monsters fighting it out then you might also enjoy this one from Yggdrasil. Also at 96% RTP but with a much higher top payout of 25,000x, Re-loaded Vikings fight against Sirens and when they win they add sticky wilds to the reels with multipliers of up to 8x. There are no Gigablox in this one but the variance is super-high and seriously-big win sequences are possible.

Where to Play Champion of the Underworld Slot – Further Recommendations

Here are two more Yggdrasil slot sites where we recommend playing this slot.

MrPlayA favourite casino of ours is MrPlay from Aspire Global. Highlights include over 700 slots including plenty of high variance games, and 100 spins with your first deposit to play NetEnt games. The minimum deposit is £10 and MrPlay accepts Paypal too.

Voodoo DreamsAlternatively, you can try this site from SuprPlay, a supernatural casino with over 1,000 slots to choose from. New players making a first deposit get 50 free spins on Book of Dead with winnings paid in cash and their Experience Points loyalty program rewards you for every penny you wager.

Our Verdict

Champion of the Underworld sets up an epic battleground when the game loads up but it falls just a little short on features in the final verdict with much of this just re-workings of previous game mechanics.

The Wild Fights are fun and can occasionally deliver some decent wins particularly if 4×4 Gigablox are involved in the transformations. But the free spins are where it’s really at. This is the chance to hit close to that 10,000x top payout. You need a lucky run, helped by the fact that you get a Wild Fight on EVERY spin, and the more wilds you turn, the higher your multiplier goes.

We think the game could have been improved by making those wilds sticky in the bonus round and adding in some 6×6 blocks like you find in the original Hades Gigablox.

In conclusion, overall, this is a game that fans of the fighting-concept from Yggdrasil will love. High risk fans will get their kicks here too. But overall the game could have benefited from more features and a higher top payout to make it really stand out.