(SORRY ABOUT THE CAPS)
SIMPLE AND FUN, BUT IT NEEDS A CLEAR BUTTON LIKE FRANKIELIKES SAID. TO MAKE IT MORE INTERESTING, ADD SOME DRAWINGS THAT YOU CAN COLOUR IN? JUST AN IDEA.
2/5....score doesn't reset if you retry, plus it's too easy to cheat if you have a touchpad (you can just click with the touchpad and it wont unclick).