About Orb Arena

Orb Arena is an original game, so nobody arrives here searching for it by name. What it belongs to is the family usually called io games: drop into an arena, start tiny, eat to grow, and try not to get eaten. If you have played any cell or blob eating game in a browser, you already know the loop, and this is our take on it with short rounds and a fixed finish.

You control one orb with the mouse, a finger or the keyboard. The arena is scattered with hundreds of pellets that each add a little mass. Bigger orbs can absorb smaller ones, but only when they are clearly larger, about 15 percent heavier, and only once they overlap properly. Size has a price: the larger you get, the slower you move, and very large orbs steadily leak mass so a leader cannot simply sit still on a lead.

The scoring twist is that your result is your peak mass, not what you hold at the buzzer. Being absorbed sends you back in small after a moment, but the best size you reached still counts. That keeps rounds friendly for newcomers and makes early aggression worthwhile. A round lasts about a minute and a half, which makes it a good warm-up or a quick party game for a group.

How to play Orb Arena

Goal: finish the round with the highest peak mass of any player.
Steer with your mouse or WASD and arrow keys, or drag on a touch screen. Your orb moves continuously in the direction you point.
Roll over pellets to eat them. Each one adds a small amount of mass and a new pellet appears elsewhere.
Touch a smaller orb to absorb it. You must be roughly 15 percent heavier and cover most of it, and you gain 80 percent of its mass.
Stay away from anything larger than you. If you are absorbed, you respawn at starting size after a short delay.
Bigger orbs travel more slowly, and very large orbs gradually shed mass over time.
When the 90 second clock ends, the player whose orb reached the greatest mass at any point wins. Equal peaks share a draw.

Rules checked against the game on 2026-09-01.

Orb Arena tips and strategy

Farm pellets in a quiet corner for the first few seconds. Early mass decides who is the hunter when players first meet.
Judge size before you commit. An orb that looks only slightly smaller may be inside the 15 percent margin, and then neither of you can absorb the other.
Use your speed while you are small. Little orbs are quicker, so escape in a straight line and do not turn back toward a big one.
Trap targets against the arena edge. The walls stop movement, so a smaller orb pinned in a corner has nowhere left to go.
Because peak mass is what scores, a big risky absorb late in the round costs you nothing if it fails. Go for it.

Orb Arena FAQ

What kind of game is Orb Arena?

It is an eat-and-grow arena game in the io style. You steer a single orb, collect pellets to get bigger and absorb smaller players, all in real time with up to eight orbs in the same arena.

Can I split my orb or shoot mass?

No. This version keeps the controls to steering only, so there is no splitting or ejecting. Every fight comes down to movement, relative size and cornering your target, which also makes it easy to play on a phone.

How big do I need to be to eat another player?

You need to be about 15 percent heavier than the other orb, and your orb must overlap most of theirs. Two orbs of nearly equal size will just pass over each other without either being absorbed.

Do I lose if I get eaten?

No. You come back at starting size after a short pause and keep playing. Your score is the largest mass you reached during the round, so a strong early run still counts even if someone absorbs you later.

How long is a round and how many can play?

A standard round lasts 90 seconds and holds 1 to 8 players. You can start alone, and bots are added so the arena is never empty. Hosts of private rooms can set a different round length.

How many players do I need for Orb Arena?

Orb Arena supports 1 to 8 players. If a full table of real people isn't ready when you queue, MultiplayerHub fills the empty seats with bots instantly so the match starts without waiting.

Do I need to download anything or sign up to play Orb Arena?

No. Orb Arena runs entirely in your browser tab — no app install, no account, no email required. Pick a name and you're matched within seconds.

Is Orb Arena really free?

Completely free. Orb Arena costs nothing to play and never asks for a card — ads keep the servers running instead.

Can I play Orb Arena with a specific friend instead of strangers?

Create a private room from the Orb Arena page to get a shareable room code, or enter a code a friend already sent you to jump straight into their table.