Is Agar.io still online?
Yes. Agar.io was online when we last checked.
Control a tiny cell and eat other players to become the biggest cell of them all. [1]
What is Agar.io?
“Play online with players around the world as you try to become the biggest cell of them all! Control your tiny cell and eat other players to grow larger! But watch out: players bigger than you will be trying to make you their lunch. Survive and eat long enough to become the biggest cell in the game! Play online in free-for-all action and use splitting, shrinking and dodging tactics to catch other players - or avoid them! Use a variety of special secret skins with the right username!”
From Wikipedia
Agar.io is a massively multiplayer online game created by Brazilian developer Matheus Valadares and published by Miniclip. Players control one or more circular cells in a map representing a Petri dish. The goal is to gain as much mass as possible by eating cells and player cells smaller than the player's cell while avoiding larger ones which can eat the player's cells. Each player starts with one cell, but players can split a cell into two once it reaches a sufficient mass, allowing them to control multiple cells. The name comes from the substance agar, used to culture bacteria.
The game received positive critical reception; critics particularly praised its simplicity, competition, and mechanics, while criticism was directed at its repetitive gameplay. Largely due to word of mouth on social networks, it was a quick success, becoming one of the most popular browser and mobile games in its first year. The mobile version of Agar.io for Android was released on 7 July 2015 and iOS on 8 July 2015 by Miniclip. Agar.io has inspired similar web games called ".io games", including games with a similar objective but different characters, and games that incorporate elements of other genres like shooter games.
Excerpt from the Wikipedia article “Agar.io”, by its contributors, licensed CC BY-SA 4.0. Unmodified except for paragraph trimming.
In this directory, Agar.io sits in the .io wave collection and is tagged io (56 games), arena (11 games) and casual (9 games). It launched in 2015, which places it on our timeline.
Fact file
- Developer
- Matheus Valadares
- Publisher
- Miniclip
- First released
- Apr 28, 2015
- Genre
- action game, massively multiplayer online game, casual game, .io game
- Platforms
- Android, web browser
- Game modes
- multiplayer video game
Source: Wikidata (CC0). Wikidata is community-edited; corrections welcome there.
How to play
- 01Open agar.io in a desktop or mobile browser. It is the official site; avoid “unblocked” mirrors.
- 02The homepage doesn't say whether you need an account. Many games here let you play as a guest and register later to keep progress.
- 03Controls and basics, in the game's own words:
Control your tiny cell and eat other players to grow larger!
Platform notes
- Browser
- Plays in the browser from agar.io (our inclusion rule).
- Account
- Not stated on the homepage.
- Mobile
- Not stated on the homepage.
Status history
| Checked (UTC) | Status | Response |
|---|---|---|
| Oct 29, 2026, 08:46 UTC | Online | 53 ms |
| Oct 29, 2026, 08:24 UTC | Online | 69 ms |
Per-check history started on Oct 29, 2026. Status changes across all games are in the status log.
Agar.io: FAQ
▸Is Agar.io still online?
Yes. At our last check on Oct 29, 2026, 08:46 UTC, the official site at agar.io responded normally (HTTP 200) in 53 ms. A site that answers doesn't guarantee busy servers, so if a lobby is empty, try a different time of day.
▸When did Agar.io come out?
Agar.io launched in 2015 (source: Wikidata).
▸Who made Agar.io?
Wikidata lists Matheus Valadares as the developer, and Miniclip as publisher.
▸Do I need to download anything or make an account to play Agar.io?
Agar.io is playable from its official website in a web browser; that's our inclusion rule. Its homepage doesn't state whether an account is required, so expect a possible sign-up step.
▸What's the official Agar.io website?
https://agar.io/. Still Online only links to official game sites, never to re-uploads or mirror sites.
▸What games are similar to Agar.io?
If you like Agar.io, try Brutal.io, Copter.io, Diep.io, Digdig.io.
If you like Agar.io
Brutal.io
Online · 280ms · brutal.io
Drive a car and swing a flail at other players. Exactly as chaotic as it sounds.
#arena #quirky
Copter.io
Online · 112ms · copter.io
Fly a copter, keep shooting and upgrade special abilities in intense battles.
#shooter #arena
Diep.io
Online · 72ms · diep.io · 2016
Survive and shoot at others while trying to keep your own tank alive.
#shooter #arena
Digdig.io
Online · 362ms · digdig.io
Dig through the ground and destroy your foes.
#arena #digging
EvoWars.io
Online · 667ms · evowars.io
Arena fighting .io game: challenge opponents in an open arena.
#arena #fighting
Gats.io
Online · 43ms · gats.io
Fast-paced top-down shooter: choose a weapon, unlock power-ups and compete in real-time arenas.
#shooter #arena