Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Extremely fun!

This game is great. It's fun but educational as well and really challenges you to use your brain in ways you've forgotten to use them since you were in middle school (at least if you're an adult like me). Extremely challenging in the memory activities and the head counting. The only complaint that I have with this game is that it does not recognize some letters that you write on the screen. For example, it rarely recognizes the letter "K" and I'm not sure how many different ways there are to write the letter. So besides being frustrated with it not recognizing some letters, the game is awesome. I play it everyday and my husband and I are constantly trying to beat each other's brain ages! We also have Brain Age 2 and it does not have any of the writing/lettering issues that this game has. I highly recommend BOTH of them!