I might've had a bad opinion on this game before, I've changed my mind.

Maybe put difficulty? Or records in how many moves you won it? I have one question: Why there is a pair counter if there are only 8 pairs because I see it useless? In it's place you could put like a timer for how fast can you beat it or how much pairs can you find in a specific time period or even if the timer is running and each time you get a pair you get a small time boost so you can play it longer. I just want the game to be a little bigger then it already is...

The design is great. I would like if you put some mini-games inside and not onlye the "pairs".