Engulf trees, cars and everything on your way to grow your black hole, so it will be able to compete in battle with other black holes. Swallow parts of the city to make your black hole bigger, and, when you think, that your hexar is huge enough go for a battle with other hexars in our new multiplayer io simulator: Tornado.io. Play as a great hexar in our new simulator where in a great battle black holes are trying to defeat each other. Welcome to our new multiplayer io simulator where you will take part in battle.