Planet Clicker 2
Agar.io
- Developer
- Matheus Valadares
- Released
- April 2015
- Last Updated
- July 2023
- Game Engine
- HTML5
- Platforms
- Browser (desktop), iOS, Android
- Orientation
- Landscape
- Players
- Multiplayer
- Price
- Free
- Play Opens
- Official website (agar.io)
About Agar.io
Eat pellets and smaller cells to grow, and stay away from anyone bigger than you.
Agar.io puts you in control of a small cell on a giant map that looks like a petri dish. Eat the colored pellets scattered everywhere to grow, swallow players who are smaller than you and stay away from anyone bigger. The catch is that the larger you get, the slower you move, so even the biggest cell on the server is never completely safe.
Brazilian developer Matheus Valadares, who was 19 at the time, released the game for web browsers on April 28, 2015 after building it in a few days with JavaScript and C++. It spread fast, Miniclip published the iOS and Android versions in July 2015, and its success inspired the whole family of .io games that followed.
Two moves give the game its depth. Splitting launches half of your mass forward to catch a fleeing cell, and ejecting mass lets you feed a teammate or bait a rival. Green spiky viruses add risk, because a big cell that touches one bursts into many small pieces.
Tips For Growing Fast
- Stay close to viruses while you are small, since big cells cannot chase you through them without bursting.
- Only split when the target is clearly less than half your size, or you become the meal.
- Grow on pellets first and avoid fights until you are big enough to win them.
- Feeding a virus with ejected mass makes it shoot out a new virus, which can burst a large rival.
Features
- Simple Goal: Eat pellets and smaller cells to become the biggest on the map
- Split Attack: Divide your cell to launch part of it at a target
- Eject Mass: Feed teammates or bait rivals with small blobs
- Viruses: Green spikes that burst large cells into pieces
- Live Leaderboard: The biggest cells on the server are listed on screen
- Mobile Apps: Official iOS and Android versions from Miniclip
How To Play Agar.io
- Press Play to open the official Agar.io site.
- Type a nickname and press Play.
- Move your cell with the mouse and eat pellets to grow.
- Eat cells smaller than you and run from bigger ones.
- Press Space to split and W to eject mass when the moment is right.
Agar.io Controls
- Mouse move
- Space split
- W eject mass
Our Take On Agar.io
What We Like
- Rules anyone understands in seconds
- Every round plays out differently
What Could Be Better
- Large players can dominate a server
- Losing a big cell to one mistake can sting
Who Checked This Game
- Last checked on November 3, 2026
- Play opens the official game website
- Made and owned by Matheus Valadares
Every Play button on Mopoga opens the official source of the game: the developer's website, its store page or the developer's own browser build. Details on this page come from the developer and the store listing, and we check them when the game is updated.
Frequently Asked Questions About Agar.io
Who Made Agar.io?
Matheus Valadares, a Brazilian developer who was 19 at the time, created Agar.io and released it in April 2015. Miniclip later published the mobile versions.
How Do You Split In Agar.io?
Press Space. Your cell splits in two and the front half shoots toward your mouse pointer, which lets you catch a smaller cell before it escapes.
What Do Viruses Do In Agar.io?
Viruses are the green spiky circles. Small cells can stay safe near them, but a cell bigger than a virus bursts into many pieces when it touches one.
Is Agar.io Free To Play?
Yes. Agar.io is free to play.
How Do I Play Agar.io?
Press Play Agar.io and Mopoga opens the game on its official website, where you start playing straight away. It plays in landscape, so turn your phone sideways. The keys and buttons are listed under Controls on this page.
Do I Need To Download Agar.io?
No. Agar.io runs in your web browser on a computer, phone or tablet, so there is nothing to download or install.
Can I Play Agar.io On My Phone?
Yes. Agar.io works on Browser (desktop), iOS, Android. On a phone it plays in landscape.
What Are The Controls In Agar.io?
Use Mouse to move, Space to split, W to eject mass.
What Kind Of Game Is Agar.io?
Agar.io is a Multiplayer game. It is tagged 2D, Classic, IO, Mobile and Multiplayer. Mode: Multiplayer.
When Did Agar.io Come Out?
Agar.io came out in April 2015. Its latest update arrived in July 2023.
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