Superhero Race.IO - Play Superhero Race.IO Online - funny free online game. Superhero Race.IO is racing car game, where you try to beat other players high Scores with this mindset you select your Superhero character car to choose (Batman, Iron Man, Hulk, Spider Man, Wonder Women, Wolverine, Aqua man ) total 10 different Superhero racing cars with more than 100 different body parts and colors available for customization. Unlock new characters and get good understanding of racing track, before you play race. Try to break records and have fun playing this amazing Superhero Race.IO. , enjoy online game!