Memory Challenge

This is a card match game. The aim is to help improving memory. It's also challenging. There are 5 level, from easy to hard: 1) Basic and try limit 2) Time limit 3) Shadow and mirror 4) Random match 5) Flash In each level, there are sub levels of different color: green, blue, red. When you finish all the green and blue sub levels, you can move to the next level. You can challenge yourself the red sub levels, but they are very difficult!