I was surprised at how much I like this game. There are lots of games and levels of difficulty to unlock for free, which is fun. The ads are not obtrusive. For some of the games, however, response times to my finger motion is slow, particularly with the disks on a stick and the slide picture puzzles, which make it difficult to beat the timer.
Calittle2 about Brain Puzzle - Mental & Brain Teasers, v1.6