SUMI

About this game

You are a ball. There are other balls. You have to shoot them.

How to play

1. 1Move: WASD
2. 2Shoot: Hold the Left Mouse Button
3. 3Pause: P, Esc
4. 4Goal: Destroy enemies, survive as long as possible, and get the highest score.

Controls: Single player · Landscape

Tips and strategy

• Shooting costs you nothing but the hold of a button, so fire while you move. Stopping to line up a clean shot is exactly how a ball ends up surrounded in the middle of the arena.
• Keep the middle of the arena behind you where you can. Enemies arrive from every direction, so drifting along the edge leaves you fewer angles to cover and more room to fall back into.
• Survival pays better than aggression here. The score comes from destroying enemies and lasting as long as possible, so breaking off a fight to stay alive is usually the better trade.
• Use the pause as a planning tool, not just a stop button. A few seconds to choose your next direction is worth more than reacting to whichever ball happens to be closest.

Game details

Developer

Inc0O

Released

Sep 19, 2026

Updated

Sep 19, 2026

Players

Single player

Category

AdventureArcade

Tags

Frequently asked questions

Is SUMI free to play?

Yes. SUMI runs in your browser with no download and no account, so you can start shooting the moment the page loads.

What am I supposed to do in SUMI?

You are a ball in an arena full of other balls, and your job is to shoot them. Destroy as many as you can, stay alive, and push for the highest score you can manage.

Is SUMI single player or multiplayer?

It is a solo arena game — you against the other balls — with the goal being to survive as long as possible and beat your own best score.