It's a PowerPoint game where the images of superhero and villain characters flash up very quickly, and when the student hits the keyboard it stops on one of the characters. If they land on a hero, it's plus points. If they get a villain it's minus points.
It all works live in the PowerPoint show - by pressing a letter on the keyboard the show stops. A link takes you to the scoreboard where you input the score (live in the show without having to stop the PowerPoint show).
I played this game with older teenagers - 16 to 19 years old. I split the class into two teams (you can edit the team names in the PowerPoint before you start if you like).
It's not particularly educational, I know, but it was a bit of fun for them to laugh at their friends when they got score taken off or to cheer when they got maximum points (and some of them were fascinated about how this kind of game could be made using PowerPoint).
It's not always easy finding classroom games that amuse older teenagers, but this kept them happy after a long lesson of grammar!
It's a pretty simple game, so I'm guessing there's no reason it wouldn't work with younger kids too (or indeed adults) though I've never tried.
You can take a look at the preview file which is a screen-capture-video of the game in action.
I hope you have fun with it!
If you download the game, remember to "enable content" if prompted.