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(18,981 votes)
June 2015
Last Updated:
July 2023
Browser (desktop-only), iOS, Android
Wiki pages:

Try out one of the best multiplayer games with Agar.io. Agario is a fun addicting MMO game in which you have to eat or be eaten while you strive to dominate the World of colorful cells. The game has just 2 simple rules to follow: 1) you only can consume targets that are smaller than you to evolve yourself, 2) you must give larger objects a wide berth or you will die. Start moving through the grid and try to catch all the tiny blurs of color. Eat and grow, split and multiply and rule the world.

Try to grow larger and create the biggest cell. Users have excellent reflexes and keep moving whilst avoiding enemies. Make the cell eat the tiny colored dots to grow. Conquer the Agar.io arena and devour other players in hectic multiplayer action.

Agar.io also has a Battle Royale mode now. It's absolutely amazing!

UPDATE: If you like Agario, you should definitely try out our other .io games such as Paper.io, and Krunker!

Release Date

April 2015


  • Web browser
  • iOS app
  • Android app


Agar.io was developed by Matheus Valadares, a Brazilian developer, who was only 19 years old when he developed the game!


  • Fast-paced .io game to eat smaller cells to become bigger
  • Four games modes, including Battle Royale
  • An account system
  • Play with your friends in the same arena
  • Playable in fullscreen

History of the game


Matheus Valadares announced Agar.io on 4chan on 28 April 2015. Matheus, a 19-year-old Brazilian developer, wrote the game in a few days using JavaScript and C++. The game was announced without a name and users had to connect to Valadares' IP address to play.

It was only later that the name "Agar.io" was suggested by an anonymous user on 4chan. Matheus continued adding new features to the game one week later Agar.io entered Steam Greenlight.

Initial reviews

Initially, the feedback on the game's release was mixed. Some praised the game for its simplicity and game mechanics. Fans of the game even described the game as "a good abstraction of the fierce survival-of-the-fittest competition that you sometimes see on the microscopic level." However, there was also sile criticism on the simple gameplay. This was mainly targeted towards the repetitiveness and the controls of the mobile version. Tom Christiansen of Gamezebo said the game wasn't able to hold his attention and that overall it was highly repetitive.

The success of the game

Nevertheless, Agar.io quickly became a success, mainly because it was frequently propagated through social media and broadcast on Twitch.tv and YouTube. The mobile version of the game was downloaded more than ten million times during their first week, and in 2015, Agar.io was Google's most searched video game. In the same year, it was even listed as the fifth top game on YouTube’s list of top games. Fun fact, Agar.io was also featured in the Netflix TV-series House of Cards!

Last Updated

Jul 19, 2023


  • Move mouse = move
  • W = eject mass
  • Space = split
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