MemBlock is a game where you have to remember which tiles that were highlighted. You have two seconds to memorize the highlighted tiles, and when they become normal you click on all of the tiles that were highlighted before. If it's right the tile will be highlighted, otherwise it will be red. You have five lives, so if you click on a wrong you will lose one. When you have clicked on all that were highlighted, the map will reset and you get one point. But the lives will not, so be careful!
It's recommended to start on easy to learn the game, but it will be very easy once you know it, so then you can move on.