The game isn't a complete waste of time like other reviewers say, it's worth the 20 dollars it now costs.
THE BAD
The worst thing I have to say about this game is that it's to easy, and to short. For someone who isn't even out of Middle School, it's a shame. The game should be a lot harder, and should make your mind think. It asks you to know something like this: 8 x 4 in something like 4 seconds. It's not hard to figure this one out: 32. The game is sort of a letdown when it comes to material like this, but occaisionally there is something that pops up that is worth it. 11 x 10 = ?? not something that I could come up with in the given amount of time, but a nice refresher.
Also, the "mini" games that they have are very "mini" they tend to copy the Warioware material because of the randomness of a lot of the characters is like Warioware. Despite it's major flaws, there are some upsides.
THE GOOD
It does quiz your mind-- and very easily too. I usually wake up at about 5:30, and that's when I do my Mind Quiz problems. I do it in about an hour, so I can have breakfast, then at 7:00 AM, depart for school. The games inside of it pick up your brain in a sec-- and the loads of extra features keep the game going for a while, and in total I've spent about 30 hours on it, because it lets me do math and other games while being able to have some fun, and get rewards. The main characters are kind of weird, and the fact you have to press the 'o' button instead of the 'x' button is a bit weird, but is actually different, and refreshing. It looks like there are more goods then bad, but there is more good then bad, and is worth the 20 bucks (or less) that it now costs.