Use your belly to your advantage! Challenge players all over the world and climb the leaderboards. Fight into the arena: charge, hit, dodge and defeat the opponents. Let's have some good old fun!
All Reviews:
Very Positive (62) - 87% of the 62 user reviews for this game are positive.
Release Date:
Jan 17, 2020

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“The first time we let our fans play Circle of Sumo: Online Rumble! we thought the game was ready to be released. We were wrong. We discovered the game was even funnier than expected, but our players asked for a lot of changes! We then realized we really needed Early Access to gather the most feedback as possible and then incorporate those ideas as fast as we can. We need the community to help us build the best game ever!”

Approximately how long will this game be in Early Access?

“We think that the community feedback and ideas are the most important factor of success for our game. So, in order to shape COS: Online Rumble! together with the community and build the most meaningful experience for our players, we decided to keep our roadmap flexible. Our goal is to come out of Early Access in about 2 months and we'll do our best to reach it!”

How is the full version planned to differ from the Early Access version?

“We believe that the game's core mechanics are solid and entertaining.
We aim to create new game modes, new ways to expand the interactions within the players and add more content, both for the characters and the arenas, with the support of the community. Moreover, we would like to work on together with the players on the leaderboards and ranking systems.”

What is the current state of the Early Access version?

“The main features of the game, such as the gameplay and the visual aspects, are already polished and well working. Now, with the community feedback, it's time to bring the final pieces together and create a fully multiplayer experience.
COS: Online Rumble! is still in active development, so keep in mind you will may encounter some bugs and some features could be changed along the road. Enjoy the ride with us :)

For more detailed information have a look at the "about this game" section!”

Will the game be priced differently during and after Early Access?

“The game is free and always will be. There will be some premium DLC's in the future but the core foundation of the game will always be enjoyable without the need to spending your hard-earned real-life loot. Yes, we mean money. You can win without that ;)”

How are you planning on involving the Community in your development process?

“We have always been in close contact with our community. We aim to continue this relationship during the Early Access period, using our blog and Steam community page to keep everyone updated, our Discord and social media profiles to interact and gather feedback.
We value our players and we will do anything in our possibilities to take ideas and feedback into consideration!”
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Play Circle of Sumo: Online Rumble!

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Circle of Sumo

Buy the full version of Circle of Sumo! Includes dozens of new maps, local multiplayer and lots of extra games!

Early Access

The Early Access will start Friday January 17th

About This Game


With Circle of Sumo: Online Rumble! you will play as a Sumotori, a sumo wrestler. After selecting your Sumotori you will be catapulted into one of the crazy arenas of the game, but be careful don't be fooled! They look harmless but they hide more pitfalls than you think.

Circle of Sumo: Online Rumble! is based on physics and the variety of the levels creates a wide range of challenges. Magma, sand, and hatches are just some of the elements that will stand on your way to victory, besides the other huge Sumotoris of course!

Will you try to bring down your opponents with all your strength, will you choose to use your skills to dodge at the last moment or will you try to leave the other opponents to eliminate themselves?



Challenge up to 3 more Sumotoris online, the last to stand in the circle wins the round! Whoever wins five rounds will be the champion of the match. Invite up to 3 other friends to your place and enjoy hilarious battles together.


Thanks to the importance given to physics it will not be just a matter of power to win, in addition to hitting and dodging you will have to do your best to survive in the arena. Use the environment at your advantage!


Challenge yourself, fight other players online and climb the world rankings.
It will take some practice but the first step of the podium could be yours!


Fight in five different arenas, each with its pitfalls and characteristics that make them deeply different from one another.
Master them all, don't be unprepared!


Choose from eight different sumotoris, they have different abilities! Everyone has a different sprint, strength
or acceleration rating. It is not the Sumotori that chooses the arena but the arena chooses the Sumotori!

System Requirements

Mac OS X
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: 2 GHz
    • Memory: 2 GB RAM
    • Graphics: Min 512 MB
    • DirectX: Version 11
    • Network: Broadband Internet connection
    • Storage: 800 MB available space
    • Requires a 64-bit processor and operating system
    • Requires a 64-bit processor and operating system
    • OS: macOS 10.12 or later
    • Processor: 2 GHz with SSE2 instruction set support
    • Memory: 2 GB RAM
    • Graphics: Min 512 MB
    • Network: Broadband Internet connection
    • Storage: 800 MB available space
    • Requires a 64-bit processor and operating system

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