Game interface Language: English
The "Three Keys" is a memory improving and attention training game. Just concentrate on the keys and coins locations, try to remember them and then collect . If you are mistaken, get help from hints, (it will get you back to the legendary game "Minesweeper"). Gather the most coins and topped the list!
If exercise every day, you can see how your memory is improved and how successful you will be in concentrating on the important things of your life!
Good luck!

Operating System: Android Gingerbread (2.3) - Nougat Marshmallow (7.0) or later