Sumo Sumo Slot

Sumo Sumo Slot
Published Date · Jan. 11, 2023 · Last Updated · Feb. 22, 2024
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Sumo Sumo Slot Review

Sumo Sumo Slot Overview

Witness huge fights between stacks of Wild Sumo wrestlers in Elk Studio’s hit title, Sumo Sumo. As brawls break out, take advantage of a Free Spins Bonus, a Speedboat Bonus, and plenty of other exciting game features. Check out our Sumo Sumo slot review to learn more about this feature-laden title!

Sumo Sumo Slot Details











25,000 x

Software Provider

ELK Studios



Design and Layout

Scatter Symbols Slots, 5 Reel Slots, Wild Symbol


Bonus Round, Multiplier, Free Spins, Re-Spins

Aside from offering an avalanche of lucrative bonus features, Sumo Sumo looks fantastic and offers plenty of entertaining gameplay. However, the key selling point is definitely the many bonuses that will greatly aid your chances of landing profits. The Speedboat and Super Speedboat Bonus games promise plenty of excitement, while the lucrative Free Spins Bonus will offer you the chance to scoop the incredible max win of 25,000x your stake.


Tons of Features

High Max Bet


No Progressive Jackpot

Below Average RTP

How To Play Sumo Sumo Slot

Sumo Sumo offers a unique payline mechanic across its 5x5 reel format.

With this mechanic in-play, you can look forward to up to 250 paylines being active on each spin.

Blocks of fruit appear as the game’s lower-paying symbols, offering payouts of between 0.5 and 2x your stake for a five-of-a-kind combination.

The higher-paying symbols are the Red and Blue Sumo wrestlers, which pay out 10x your stake for a five-of-a-kind combination.

Wild Symbols

Wild symbols appear in this game, substituting for other symbols to complete wins.

Sumo Sumo Slot Features

It is difficult to know where to start with the features on this epic slot from Elk Studios - there are certainly plenty to choose from.

Wild Sumo Stacks

When you land a winning combination, same coloured Sumo symbols may jump on each other if they are adjacent from another. This creates a stack and turns the Sumo symbol into a Wild symbol. It also carries a multiplier equal to the amount of Sumo’s in the stack.

Plus, when a stack is created or enlarged further, you earn a re-spin on the reels with the stacks remaining. They all move one position in the direction they are facing.

Sumo Brawls

During the Wild Sumo Stacks feature, brawls can occur between stacks of different coloured Sumo Stacks.

If a stack of both red and blue Sumos are on the same row, they will engage in a brawl during a re-spin.

The largest stack will always win unless both are the same size. In that case, the winner is picked randomly.

Each time, the winning stack will consume the multiplier of the losing stack.

A brawl can also change the direction of the winning Wild Sumo Stack.

Speedboat Bonus

Landing three Speedboat Scatter symbols anywhere in view triggers this bonus round.

This is a Hold and Win-style bonus round with a couple of differences.

It is played on a 5x5 grid, with the aim being to collect multiplier values attached to symbols.

Holding an x-bet value, a Speedboat symbol is always present on the reels.

You will receive three re-spins of all the remaining positions on the reels. If any symbols land horizontally or vertically to the Speedboat, the amount of re-spins will be reset to three.

The Speedboat will then drive around to collect any symbols in sight - when it reaches its destination, it will turn and collect others horizontally or vertically.

There are several symbols the Speedboat can collect:

  • Swimmers - a standard symbol with a multiplier value
  • Wakeboarders - when collected, it adds to the value of the Speedboat. It also holds its own value and trails behind the Speedboat collecting symbols. Additional Wakeboarders can add to the stack and increase the step value of the original Wakeboarder.
  • Ramps - will multiply the value of the Speedboat and the Wakeboarder
  • Harpoonists / Turbo Harpoonists - increases the value of uncollected Swimmers and Wakeboarders. A Turbo Harpoonist will also increase the value of those symbols once the Speedboat collects them.

This bonus round ends when you run out of re-spins.

At this point, you will receive the multiplier values that have been collected by the Speedboat and the Wakeboarder.

The round ends when you run out of re-spins. At this point, you receive the multiplier values collected by the Speedboat and Wakeboarder.

Free Spins Bonus

This bonus round is triggered when you land two Scatter symbols anywhere on the reels.

These spins are different to the base game as the Wild Sumo Stacks are sticky until the end of this bonus round.

Landing additional Scatter symbols will re-trigger this bonus round and award extra free spins.

Bonus Buy Feature

The Bonus Buy feature allows you to pay your way straight through to the bonus round - this feature is not available to UK-based players.

Triggering the different bonus features cost the following:

  • Bonus Hunt = 5x your bet
  • Brawl = 10x your bet
  • Speedboat Bonus = 50x your bet
  • Super Speedboat Bonus = 100x your bet
  • Free Spins Bonus = 500x your stake

Play Sumo Sumo Demo for Free

Want to play for free first without staking real money? Try out the Sumo Sumo slot demo in free play! Online slot demos are the best possible way to prepare for real-money gaming, as you get to learn exactly how a game works before committing real cash. Use the free play demo as a practice run before you try your luck at an online casino.

Sumo Sumo Slot RTP & Volatility

The 94% return to player score is a fair bit below the industry average of 96%.

It is considered a high volatility slot game, so wins may land less frequently when compared with other games.

Sumo Sumo Slot Graphics & Audio

Sumo Sumo (ELK Studios) 1
Sumo Sumo (ELK Studios) 2
Sumo Sumo (ELK Studios) 3
Sumo Sumo (ELK Studios) 4

Sumo Sumo Slot on Mobile

As most players prefer playing slots on their mobile devices, it’s no surprise to find that this online slot game has been optimised for mobile gameplay. Enjoy a few spins of Sumo Sumo with any iOS or Android smartphone or tablet.

Sumo Sumo


Phoebe Greenwood

Content Writer

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