This is a Super Mario Brothers version of the classic "match the pairs of hidden pictures" memory game.

There are 80 Mario picture cards (so that's 40 pairs of pictures to match) comprising 10 different Mario characters, each appearing 8 times in the 10 x 8 game grid. Successfully matching pairs of the picture cards will slowly reveal a much larger random bonus Mario picture in the game grid. There are 3 different "level" themes to choose from, each one featuring a different piece of background music from 3 classic levels of the first ever Super Mario Bros. game that appeared on the Nintendo NES/Famicom in 1985.

The object of the game is simple but challenging: clear the game grid by matching all the hidden picture pairs in the fastest time, and in the least number of moves, as you possibly can. Your best score will be saved each time for future reference, but you must play the game in this site if you want to see it again (and there is a reset option to clear that later if you ever want to). There is also a "World's Top 10 Best" high-scores table.