Play Agar.io Unblocked game for free in online games servers after typing a nickname for your guest account created for iO games. Agar.io is a really world-wide online challenge. It’s basic and so enjoyable. Move with mouse and gather colorful points for growing up. You need to escape from other players until you’re big enough to fight against them. Being greater is only possible by moving through smaller points, including opponents by scrolling.