Unblocked Christmas Memory Challenge

This game tests and challenges your memory! In each level, 12 cards (6 images in total) are shown to you for a few seconds and then they are turned to their back and you have to match cards with the same image with each other. But you have to be quick because there is a time limit in each level and if you run out of time, you will lose. As you progress through the game, your time in each level will decrease and so the game will become more difficult.