Sumo is a multiplayer physics-based party game for up to 4 players, featuring silly spherical characters with unique powerful abilities. Use a combination of mobility and tactics to survive the longest on Arenas which are just as much of a threat as your human or AI-controlled opponents.
All Reviews:
6 user reviews - Need more user reviews to generate a score
Release Date:
Dec 8, 2018

Sign in to add this item to your wishlist, follow it, or mark it as not interested

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?

“Sumo is a passion project made by a pair of former big-studio developers with a desire to make something of their own. We set out to make something we would be interested in, which for us usually means games of a smaller scale you enjoy with your friends. Early Access gives us the opportunity to get real player feedback and help scope out what further changes are needed and which direction to focus on for new content. Do you think the game needs more characters? More Arenas? Alternate game modes? Polish specific aspects of the current game? Try it out and let us know!”

Approximately how long will this game be in Early Access?

“6-12 Months. We are not looking to be a long-term Early Access title.”

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

“The full version will differ based on player feedback! We feel our Early Access build presents a complete (though small in scope) game, and we want to expand what we have. Our players will help shape what type of content we deliver based on feedback, whether that be in the form of new characters, new levels, new game modes, or focusing on polishing the existing offerings.”

What is the current state of the Early Access version?

“The game is currently feature and content complete with 8 characters and 4 arenas to play in, each with unique mechanics. The Skirmish game mode (free for all against all players) is the only mode available and can be played with any number of AI-controlled Bot opponents. The number of characters, levels, and game modes is planned to grow over time.”

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

“At this time, our plans are not to change the price between Early Access and launch (temporary discounts aside).”

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

“As we did in our former roles as public designers on a live big-studio game, we plan to listen and respond to community feedback from the Steam forums to help shape the direction of content creation for future updates.

Head over to the community boards and let us know what you'd like to see changed or to post bug reports!”
Read more

Buy Sumo


Recent updates View all (12)

June 29

Sumo Summer Sale!

Sumo has joined the Steam Summer Sale with a discount of 50%! As the title is still in Early Access, we value player feedback and testing and are happy to set a significant discounted price for the sale event.

We've also just released Update #18, which brings a ton of UI revamps and visual upgrades to the game. Check out the patch notes in the previous post!
0 comments Read more

June 29

Sumo Update #18 - Lookin’ Good!

In our first update purely focused on game polish (and just in time for the Steam Summer Sale, where Sumo is slated to be 50% off), we present a massive overhaul to some of the game’s older or placeholder UI elements, updated environment quality, and introduced a new post-process shader to enhance the in-game visuals.

In-Game Shader

Prior to Early Access, Sumo used a cel shader to stylize the game’s visuals, but it was too large of an impact on performance. We have introduced a brand new shader that is better on performance, creates the cel outline we wanted, and improves the game’s overall visual quality. If you have any performance issues with this build, please let us know.

Environment Textures

The Skirmish Arenas ‘Classic’, ‘Railway Rumble’, and ‘WaterWorks’ have been updated with all-new textures and materials on the environment and arena components, giving them a fresh updated look. These new materials also have a much lower performance impact than the previous textures. The other maps will also have a texture and material pass in the next update.

User Interface

All UI elements and game inputs are now handled by a master UI class, resolving a large number of bugs related to inputs being sent to the wrong UI under certain cases.

Button Prompts - All button prompts are now directly integrated into the UI itself rather than having a list of button prompts at the bottom of the screen at all times.

Pre-Game UI - The entire UI from the Main Menu to Level Select has new transition animations when moving from one screen to the next.

Game Mode Select - Brand new UI. The preview movies are now loaded at all times in this new version, reducing some performance issues when rapidly cycling through modes.

Character Select - Brand new UI. Each character now shows an icon summarizing their character ability, and multiple players can highlight the same character while scrolling through the list. When a character has already been selected, anyone else who has highlighted that character will not be able to pick them, but can still review their character ability. The ability previews will be re-recorded in a future update to fit in this new UI size.

Victory Screen - Brand new UI, complete with new animations for the intro to the victory screen.

Other Changes

Pausing while in online multiplayer will now actively suspend the game, rather than just displaying the pause menu.

The game can no longer be paused while in certain animated sequences, such as the opening ceremony or the presenting of the round score at the end of a round.

In an online multiplayer game, pausing the game will no longer show the pause buttons for the other players who did not pause. The pausing player retains full control over resuming the game.

Significantly reduced the memory and disk load of the Blaze game mode’s environment.

Fixed the Opening Ceremony skipping all players beyond player 1 in any games beyond the first played in a game session.

Fixed an issue in Respawn-enabled maps where dashing, jumping, and using abilities was not disabled while respawning.

The multiplayer friends list and lobby no longer pull avatars from user’s Steam profiles. This may return in the future, but is being removed for now.

Fixed an issue where character inputs were still processed during a pause, resulting in unintended dashing and ability use after unpausing.

Known Issues / What’s Next

The in-game videos need to be re-recorded across the board to show the latest visual game style, and to fit within the new UI windows. The character ability previews in particular are very difficult to see in the new character select UI.

Many new features require more localization work, so non-English language support is spotty for awhile.

Button prompts may not immediately switch off of Controller mode for keyboard users. If this happens, try clicking in the window anywhere to switch to Mouse mode. Future button prompts should then always switch to the correct images.

The size on disk requirements have jumped with this update. We will work to get this reduced in future patches.

The next update will continue to focus on polish similar to what we have done in this patch, including more focus on gameplay elements.
0 comments Read more
See all discussions

Report bugs and leave feedback for this game on the discussion boards

About This Game

Sumo is a multiplayer physics-based party game for up to 4 players, where players use their wits, special abilities, and spherical physique to wrestle your human or AI opponents over the edge of irrationally hazardous Arenas. You have only one objective - Be the last sphere standing.

Fast-Paced Action

Each of Sumo's spherical combatants is deceptively maneuverable -- dashing and jumping to juke attacks and hazards alike. Do your best to snap up Boost Orbs to power up your devastating ability, before your round rivals do.

Unique Arenas

Each Arena in Sumo offers creative ways to send your opponents careening off the edge. But beware, all Arenas continuously collapse, leaving only one player victorious. In Sumo, look forward to unceremonious ring-out by such things as:

Pressurized pipe-blasts of the WaterWorks!

Incoming meteors in Sumo in Space!

Runaway trains in Railway Rumble!

... but be sure to knock your friends into all of them!

Multiplayer Mayhem

The longer you survive, the more points you get! The first to reach the point goal wins. In Sumo, ties cannot be tolerated, and are settled with the white-knuckle, rapid-fire Sudden Death round!

System Requirements

    • OS: Windows 7
    • Processor: Core i3
    • Memory: 4 GB RAM
    • Graphics: Dedicated w/ 1GB VRAM
    • DirectX: Version 10
    • Storage: 1 GB available space

What Curators Say

3 Curators have reviewed this product. Click here to see them.

Customer reviews

Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Display As:
Show graph
Hide graph
Excluding Off-topic Review Activity
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...