Monsters in the game space can be beneficial in terms of developing certain abilities, and one of them is memory. Its development is always useful and the game Grimace Shake Match Up will help strengthen and train it. Pictures with the image of Grimace will open for you for a few seconds so that you can remember the location of the paired pictures. Then they unfold and you need to click on the ones that are the same to force them to open again. Opening pairs in a row will earn you extra points in Grimace Shake Match Up.