Aquar .io is a great multiplayer online IO fish aquarium game at abcya 4 school 2020. Your task is to control a fish and move to eat all kinds and find other fish to join your army. Once you control a whole lot of units, you will be strong enough to go hunt other players. Be careful with the dangerous jellyfish that float all over the field and avoid crossing larger groups. Become the leader of the aquarium and have fun with Aquar IO!