I don’t know why I keep doing this to myself, but every time I open agario, I think, “Just one round.” And somehow, one round always turns into hours of chaos, panic, laughter, and tiny-circle drama. Here’s another long, personal story from my latest session, filled with funny moments, tense escapes, and surprisingly...

Agar.io is a simple but wildly addictive browser-based multiplayer game. On agaronline.io you can play it for free, instantly — no download, no installation, just jump right in and start competing.  What is Agar.io In Agar.io, you control a small circular “cell” floating in a huge Petri-dish–style arena. The goal is to...