.io games are a popular massively multiplayer genre of games, usually free to play. They are a relatively new genre of video games that emphasize simplicity and speed. The general mantra of .io games is; keeping game mechanics very simple, matched by basic graphics and an ability to play multiplayer games at the click of a mouse. Another defining characteristic of this genre of .io games is to make them simple to learn, but difficult to master. These key features allow the games to be easily consumed and played to a high level of satisfaction over the course of a 5 - 10 minute period. While .io games are easy to learn, they are difficult to master. The purpose of this community is to bring together every .io game.
Agar.io was the first .io game. The domain Agar.io was suggested by a user on 4chan, simply because all other related names like cell.com and cell.io were taken. At the time of naming the .io top level domain extension was relatively new and the price was very high. So many dictionary term domains were still available. .io is the Internet domain ID for the British Indian Ocean Territory. Since few few domains are registered, and .io seemed unique enough, it was readily used and accepted.
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