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Agar.io is an online multiplayer game about growing cells and consuming others in a closed arena. Multiple players on several servers fight each other to grow the largest cell. The cell can be moved in any direction and needs to eat pellets that make the cell's mass grow. Other players do the same and with growth movement becomes slower. A player's cell can consume another if it is distinctly larger in size, absorbing it and ending the game for the other player. It is possible to restart right away, but with the original small size. The arena contains viruses that can make a cell explode, eating away from the cell and splitting it up.

Next to movement two more actions are available. It is possible to split the cell in half, launching it forward (at half the original size), in an attempt to absorb another, faster cell by surprise. The second action is ejecting mass. It can be used to gain speed quickly, as bait, to throw viruses through enemy cells, to recover after a virus explosion or to form a temporary alliance with another player by providing a gift. There are no means to communicate with other players in the game. Cells are assigned a random colour and the player can choose a name. There are also several pre-defined skins in the game, referencing countries, website or world leaders. These skins can be used by entering the correct name as the nickname.

The main game mode is a free-for-all mode, but for the browser version there are also four other ones: experimental, party, team, and battle royale.


Agar.io Android Chased by larger cells while mine consists of many parts, all controlled simultaneously.
Agar.io iPad Ready to eat my neighbors
Agar.io Browser Once you've been eaten, the match results will show you your accomplishments.
Agar.io Android A Reddit cell appears from the left.

Promo Images

Agar.io Screenshot
Agar.io Screenshot
Agar.io Screenshot
Agar.io Screenshot

Part of the Following Groups

User Reviews

Who said single-celled organisms are boring? Browser Harmony♡ (20663)

Critic Reviews

Touch Arcade iPhone Jul 28, 2015 4.5 Stars4.5 Stars4.5 Stars4.5 Stars4.5 Stars 90
Pocket Gamer UK Android Jul 14, 2015 8 out of 10 80
Games Finder iPhone Aug 02, 2016 8 out of 10 80
Common Sense Media iPhone 2016 4 Stars4 Stars4 Stars4 Stars4 Stars 80
Jeuxvideo.com Browser Jun 13, 2015 12 out of 20 60
GameZebo Android Jul 14, 2015 2.5 Stars2.5 Stars2.5 Stars2.5 Stars2.5 Stars 50
Softonic Browser Jul 16, 2016 Unscored Unscored


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  • In the weeks leading up to the 2015 general elections in Turkey, Agar.io was used in the campaign posters of the Kurdish People's Democratic Party and the Republican People's Party. The game's eat-or-be-eaten gameplay has drawn comparisons to these parties' struggles to gain power.
    Source: Hurriyet, Kotaku

  • The game is referenced in chapter 48, the ninth episode of the fourth season of the 2016 US Netflix series House of Cards. President Underwood, played by Kevin Spacey, is introduced to the game by his Republican challenger Will Conway (Joel Kinnaman). They discuss the gameplay, how it resembles the race for the party's nominations, as you "eat" the smaller players and avoid being "eaten" by the bigger players.

Related Web Sites

Contributed to by Sciere (816830)
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