smash karts is the third IO game on the list. In 2021, it is one of the top io games. One of the most addictive games you'll ever play is Hole.io. Its gameplay puts you in charge of a "hole," and your duty is to maneuver it around the city looking for food and/or anything edible to eat in order to grow bigger. Despite the fact that the only thing you can do in this game is feed and survive, we've discovered that people can get hooked on the game's excitement for hours.