Agarioio İo is a popular online multiplayer game where players control a cell and try to grow larger by consuming smaller cells. The game was created by Matheus Valadares and was first released in April 2015.
Players start the game as a small cell and move around a virtual petri dish, consuming smaller cells to increase their size while avoiding larger cells that can consume them. The game features simple controls and gameplay mechanics, making it easy to pick up and play.
Agarioio İo has become popular due to its addictive gameplay, ability to play with friends, and customization options such as choosing a custom skin for your cell. The game has inspired numerous clones and has even been adapted into a mobile app for iOS and Android devices.