Yorg.io is a cool strategy .io game online, in which you will have to defend your base against zombies. It is one of the greatest strategy games you can play for free at Best Io Games. Your objective in Yorg.io is to build a base and make sure it survives a zombie attack during the nighttime. Construct defensive towers to protect your base from the incoming waves of zombies. Build supply chains to provide various resources to the towers. Use mines and processors to establish the supply chains. Compete against your friends and other players around the world and try to become the best of them all! Use your arrow keys, W,A,S,D keys or mouse cursor to move the camera. While upgrading, hold your shift key and all buildings of the same type will be upgraded. Hold alt while upgrading to max the buildings out to the maximum affordable level. Can you kill all the zombies and survive the night in this fun Friv game called Yorg.io?