IO games have become mega popular because of the simplicity and thrilling action. Play them you can completely free of charge. Choice is great, you can become a worm fighting for food, small cell, and the absorption of other atoms are divisible by in case of danger, or brave tanker with guns blazing. The main goal - to survive, to become the biggest and destroy as many opponents as possible. The online immediately are thousands of players from around the world to prove their superiority over the other is difficult enough, but training is required to bring the desired result. Selecting an image of the character is free.