Orn.io is a multiplayer 3D io game, where you start off as a rolling ball, and consume smaller balls and players by rolling over them them.
WASD or Left Mouse Button to move
Space or Left Mouse Button to split
Move Mouse to rotate view
Stay away from larger players
Split when there are no large players around
Don't get cornerer
Stay away from spikes, they will break you into pieces and make you loose points