good concept I try to find a game about memory and it is the one. You will find how improvement you are when you play this game just for 10 min a day. However, this game can be improved in many dimension, just like... set to limit quest scenario, tournament, fight with friends, etc. I think it is the good game even it is not much popular, but if you are the one how need to focus on your memory, this game should be one of your list.
Good app Challenging
fun to play