This game is a quiet challenge for your memory. You have to match all the cards before time is up. There are four themes you can choose one of them and select the difficulty that you want. 
Note:
Thanks for:
(www.freepik.com")  designed by brgfx, 
 , www.wallpaperhd.online  And, https://wallpapersafari.com
which I take many of  the pictures from their website