=Graphics and Design (3/5):
The tiles match each other in style when they're flipped, but the one-colored red backside makes it really dull to look at. The text in the top of the screen seems misplaced, because they're not aligned properly. Also, Times New Roman is good for writing reports for your English-teacher, but they have no place on the web. Also try adding a background next time.
=Sounds and Music (2/5):
I like that you have two sounds, one for the first click and one for the second. It adds a nice dynamic feel when playing, but due to the lack of music I have to give you a mere 2/5-rating.
The idea is one of the most overused ever. Seriously. I didn't even finish the game due to the repetitive nature of this game. Sorry, that's a 1.
The game is repetitive and boring. It appears to be at a still, unless interacted by with the player.
A little hint, try adding a leaderboard! (not sure if you actually have one, since I haven't finished the game)