Ive downloaded numerous math facts type games such as this one, but they always left me wanting something better. I wanted to stay sharp with all of the math facts (addition, subtraction, multiplication, & division); and so I tried to find a game that was, basically, flash cards. I found many, but they were boring and slow. This game is fast paced and challenging. It is exactly what I was looking for. It will keep me sharp! FYI, Im 58.