The life of a little bacteria is full of challenges and dangers. It has to go out into a big and perilous world with plenty of other organism that don’t mind having it for dinner and somehow survive there looking for food to grow and shelter to stay safe. Your first steps in agar.io won’t be easy. But if you get through all the misery and collect enough colorful spheres scattered all over the screen to increase your size, you’ll be able to stand up for yourself and challenge all those bigger guys boldly roaming the map, aware of their own might and invincibility. Well, that is until they meet a decent rival like you!