Sumo Sumo Online Slot

Published: 13 Dec 2022 | Updated: 14 Dec 2022
Published: 13 Dec 2022 | Updated: 14 Dec 2022
Game Provider
Maximum Win
Progressive Jackpots
Bonus Feature
Asian, Sport

Licensing Authorities and Testing Agencies

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Slot Setup and Betting Options

  • 5 Reels
  • 5 Rows
  • 3D Graphics
  • 06.12.2022 Release Date
  • Mobile Version
  • £0.20 Minimum Bet
  • £60.00 Maximum Bet
  • Win Both ways

Sumo Sumo Online Slot Review

Japanese wrestlers can form winning combinations worth 25,000x your stake in the Sumo Sumo slot machine from ELK Studios. It’s a lively game with a cartoon style, and plenty of fun animations from the characters.

Sumo wrestlers pile on top of each other to form stacks of wild symbols with multipliers that walk across the 5 reels. The other reels respin for as long as this feature creates winning combinations. A sumo in a speedboat is the star of a fantastic free spins round. Swimmers, wakeboarders, and harpoonists add multipliers and cash values during these free games. There’s another free spins feature where sumo stacks remain active throughout.

It's a high volatility slot with average returns of 94.00%, and you can enjoy this all-action game on PCs and mobiles at our recommended casino sites.

How to Play the Sumo Sumo Slot Game

The 5x5 symbol grid sits within a narrow street, where you find bin bags, baskets of fish, and a graffiti-covered roller door. It’s a rough-looking neighbourhood, but the symbols are a charming mix of cube-shaped fruit emblems, such as watermelons, cherries, and grapes, plus the cartoon sumo symbols in red or blue loincloths. The soundtrack doesn’t sound very Japanese to our ears, but it’s certainly lively.

There are 12 bet options from a minimum of 0.20 to a maximum of 100.00 per spin and you reach them with a click on the coin stack under the reels. X-iter bonus buy options unlock various features for a price, although these are not available in the UK. Due to local laws, the Auto feature is also blocked for UK players.

Sumo Sumo is a complex game, so be sure to read the paytable before you play it on your PC, iOS, Android, or Windows mobile on any of your Betting Apps. It’s under the 3 lines on the control panel, and has details on the multiple features, plus a list of symbol values. 259 ways to win cross the reels from left to right and you claim up to 10.00 your stake from the most value red sumo symbol.

Free Spins & other Sumo Sumo Slot Features

It’s time to get to grips with the extra features, and there are lots of them, so hang onto your loincloth as we enter the ring.

The W is a wild symbol that acts as others, but if more than one sumo symbols of the same kind are adjacent to each other, they form wild sumo stacks that can also step in for other symbols.

The stacks fill a single symbol position and come with a multiplier equal to the number of sumo involved. These move one reel to the right, as other reels respin for as long as you get a win, while any more sumo symbols add to the stack and multiplier. If the stack reaches the right side, it changes direction, and if red sumo stacks meet blue sumo stacks, they brawl to merge their powers.

Three Free Spin symbols award 6 bonus games where wild sumo stacks don’t vanish once they reach the left reel but continue to move around the reels throughout. More triggering symbols award a further 6 free spins.

Three red triangle bonus symbols trigger the Speedboat free games. You get 3 spins where a sumo in a boat collects symbols on the same row or column to build various multipliers that increase its value. Swimmers add cash values, a harpoonist increases the value of other symbols, a wakeboarder hangs onto the boat to increase its value, and a ramp increases the value even further. Once the spins end, you claim the multiplier built up by the speedboat.

Slot Features

  • Bonus Buy
  • Multipliers
  • Scatters
  • Wild Symbol
  • Free Spins
  • Sticky wilds
  • Walking wilds
  • Stacked wilds
  • Multiplier wilds
  • Expanding wilds
  • Split symbols wilds
  • Re-Spins
  • Quickspin
  • Gamble Feature
  • Retriggering

Sumo Sumo Maximum Wins, Average Returns, & Volatility

The maximum win from the Sumo Sumo slot is 25,000x your stake, which is 2,500,000.00 at the highest bet level – comparable with plenty of prizes on offer on the Jackpot Slots. Sumo Sumo is a highly volatile slot and there’s a long-term payback percentage of 94.00%, which is well down on the 96.00% or more that you would expect from a high volatility game.

Our Sumo Sumo Slot Rating

That low return to players percentage can’t be ignored, but the style, gameplay, and features of the Sumo Sumo slot machine could be enough to overcome it.

Wild Sumo Stacks come with fun animations as multiple characters march across the reels and perhaps brawl with each other as the rest of the symbols respin. Having 2 distinct bonus rounds adds to the thrills, with wilds remaining active throughout the basic free spins, and a fun but rewarding speedboat feature where you can build a big multiplier by the end.

Wrestle for wins as you play the Sumo Sumo slot game at desktop and mobile online slots uk casinos featured on the pages of


Instead of paylines, the Sumo Sumo slot has 259 ways to win running across the 5 reels and 5 rows of symbols. You win from matched symbols on adjacent reels, starting from the left side.

The Sumo Sumo slot can pay prizes worth up to 25,000x your total stake. If you play at the maximum of 100.00 per spin, it’s possible to collect a win of 2,500,000.00.

Two sumo characters can appear on the reels of the Sumo Sumo slot. If matched examples are on the same row, they stack one on top of the other and walk across the reels as wild symbols with multipliers. The other reels respin for as long as they make new winning combinations.

Other features of the Sumo Sumo slot machine include free spins where the walking wilds remain active for the duration, plus a Speedboat free games round, where a boat gathers multipliers as it collects swimmers and wakeboarders.

It depends where you live. UK residents can’t play the Sumo Sumo slot or other online casino games for free, but the laws vary from country to country.

You can read all about online casino apps here at Look for a site with the Sumo Sumo slot in their range, then download the app to your mobile device. You can then click an icon to reach this and many other games.

The Sumo Sumo slot machine is found as some of the best online casinos. Join an approved site to claim a bonus, then enjoy it alongside a great selection of other slots, table, and card games at these fully licensed operators.

Games similar to the Sumo Sumo slot include the Sumo Spins online slot by Red Tiger, Legendary Sumo from Endorphina, and Super Sumo by Fantasma Games. You’ll find these and more at the top sites.

The Sumo Sumo slot comes from ELK Studios. Other big hits from this Swedish developer include Cygnus 2, Avalon Gold, Taco Brothers, and Knockout Diamonds. These are just some of the games in their popular range.

ELK Studios released the Sumo Sumo slot into desktop and mobile casinos on 6th December 2022.

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With over 12 years of experience in online gaming, Adam has seen, played, reviewed, and tested hundreds of slot games. He is always keeping an eye out for new features, themes, and potential jackpots by testing slot games even before they are released to the market.