Agar.io[a] is a massively multiplayer online action game created by Brazilian developer Matheus Valadares. 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 agar and 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.
Agar.io mobile app logo
|Platform(s)||Browser, Android, iOS|
28 April 2015
24 July 2015
The game was released to positive critical reception; critics particularly praised its simplicity, competition, and mechanics, while criticism targeted its repetitive gameplay. Largely due to word of mouth on social networks, it was a quick success, becoming one of the most popular web and mobile games in its first year. A Steam version was announced on 3 May 2015 (though never released as of May 2019[update]), while the mobile version of Agar.io for iOS and Android was released on 24 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.
The objective of Agar.io is to grow a cell on a Petri dish by swallowing both randomly generated pellets (agar), which slightly increases a cell's mass, and smaller cells, without being swallowed by even larger cells. The browser version currently holds five game modes: FFA (Free-For-All), Battle Royale, Teams, Experimental and Party. The mobile version of the game includes FFA (Free-For-All), Rush Mode and Battle Royale. The goal of the game is to obtain the largest cell; players must restart from a small cell when all their cells are eaten by larger players or fountain viruses. Players can change their cell's appearance with predefined words, phrases, symbols or skins. The more mass a cell has, the slower it will move. Cells will gradually lose a small amount of mass over time.
Viruses are green, spiky circles that split cells that consume it. Viruses are normally randomly generated, but can also be generated when receiving enough mass, to the point of splitting into two, hence creating a new virus.
Players can split their cell into two, and one of the two evenly divided cells(if the mass of the original cell is odd, one cell will be slightly bigger than the other) will be shot in the direction of the cursor when the space bar was pressed. This can be used as a ranged attack to shoot a cell in order to swallow other smaller cells or to escape an attack and move quickly around the map. Split cells merge back into one cell if a bigger cell of the same player’s consumes it. Aside from feeding viruses, players can release a small fraction of their mass to feed other cells, an action commonly recognized as an intention to team with another player.
On 24 July 2015, Miniclip published a mobile version of Agar.io for iOS and Android. Sergio Varanda, head of mobile at Miniclip, explained that the main goal of the mobile version was to "recreate the gaming experience" on mobile, citing the challenges with recreating the game on touchscreen controls.
Agar.io was released to a positive critical reception. Particular praise was given to the simplicity, competition, and mechanics of the game. Engadget described the game as "a good abstraction of the fierce survival-of-the-fittest competition that you sometimes see on the microscopic level." Toucharcade praised its simplicity, strategic element, and "personality."
Criticism was mainly targeted towards its repetitiveness and the controls of the mobile version. Tom Christiansen of Gamezebo was mixed on the game, saying that there was "nothing to hold my attention" and that it was "highly repetitive, overall." Pocket Gamer, reviewing the mobile version, described its controls as "floaty."
Because it was frequently propagated through social media and broadcast on Twitch and YouTube, Agar.io was a quick success. The agar.io website (for the browser version) was ranked by Alexa as one of the 1,000 most visited websites and the mobile versions were downloaded more than ten million times during their first week. During 2015, Agar.io was Google's most searched video game. It was Google's second-most searched game in the United States in 2016. A 2015 press release by Miniclip stated that Agar.io was listed as the fifth top game on YouTube's list of top games.
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.
During the campaigns of the June 2015 Turkish elections, Agar.io was used in Turkey as a medium of political advocacy; many players were naming their cells after Turkish political parties and references, with alliances formed between players with similar political views, battling against other players with opposing views. Some political parties have used Agar.io in campaign posters as a symbol of support.
Agar.io was featured (including some details of its gameplay as well as a shot of an actual game) in "Chapter 48" of Netflix TV series House of Cards. Its gameplay was compared to the presidential campaigning.
- Sometimes called or pronounced "agario" (/ -/,).
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- "Comment battre vos collègues au jeu en ligne Agar.io" [How to beat your colleagues in the online game Agar.io]. Le Monde (in French). "Enfin chaque joueur perd de la masse." ("Finally each player loses mass.")
- "Comment battre vos collègues au jeu en ligne Agar.io" [How to beat your colleagues in the online game Agar.io]. Le Monde (in French). "Il doit composer avec les autres compétiteurs, mais aussi avec les virus, des boules de taille moyenne qui feront éclater les joueurs les plus gros en plusieurs morceaux, les laissant vulnérables ... Il est possible de faire se dupliquer les virus en leur tirant dessus plusieurs fois avec la touche W." ("They [the player] must deal with other competitors, but also with viruses, balls of medium size that split the biggest players into several pieces, leaving them vulnerable ... It is possible to duplicate viruses by shooting them several times with the W key.")
- "Agar.io: a guide to the hit game – and the best tips to win". The Week. Retrieved 5 August 2015.
- "Comment battre vos collègues au jeu en ligne Agar.io" [How to beat your colleagues in the online game Agar.io]. Le Monde (in French). "Le plus gros est, par exemple, nourri par ses amis qui viennent volontairement se faire manger." ("The biggest are, for example, fed by their friends who come voluntarily to be eaten)
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- "Web game becomes latest battlefield in Turkish politics". Hurriyet Daily News. 27 May 2015. Retrieved 10 August 2015.
- "Miniclip's Agar.io features in 'House of Cards' season 4". Business Insider Deutschland. 4 March 2016. Retrieved 15 April 2016.