Superhero io is a fun game that you should play.
The scene starts with your superhero in an arena full of superheroes at level 1 and as you level up with the option of 30 levels you become a new superhero.
You use your mouse to hover over the screen and collect the colorful objects to earn points. Once you do that you will gain power. Then you will use your mouse to left-click when you see other superhero's and you can eliminate them with the left-clicking of your mouse. Once you do that you will become a new superhero.
Once you start eliminating your opponents, you again will become a new superhero and will also gain more points.
The game will end if you get hit by another superhero. Make sure to avoid the others to try to win the game. It is an antique-styled game but is very fun to play.