IO games are a category of online free games, which first appeared on a website with the domain ending .io. It featured a game, where people managed differently colored dots, which ate other dots and food, scattered all over the playground, limited from 4 sides but containing enough space to move for around a dozen players at the same time. The game was an immediate success, giving a large spring jump to other games having the same gaming mechanics.
Today, io games are very diverse, featuring all sorts of worlds, designs, visual manifestation, and detailing. One of the truly captivating IOs is hole.io, where a gamer operates a small black hole, which eats things that fit into its diameter and grows over time to a size, which allows a hole to eat huge objects like buildings and mountains. Another great IO game is worms.io, where a gamer operates with a worm, which has to gain territory and eat other worms on a map until it gains the entire level’s territory.
Playing any IO game is a tricky task, as one can be eaten by other players, the same as you can eat them. Once eaten, you start from the very beginning on the map (if a map features countless respawns) or wait until the round ends to start anew in a new round.