You will be shown eight cards. You have to remember which cards were apples, and which were wraiths. Then you need to click the apples. This may sound a bit easy, but you get less and less time to look at the cards, the further you get. POST YOUR HIGHSCORES IN THE COMMENTS! MINE IS 61 :)
Thanks to -avaj-, for giving me inspiration from his own game. I have not copied any scripts from him; this is made entirely by me.