This game is fantastic! At first, I thought it may have been a little bit kiddified, but there are different levels of difficulty in the Practice area, and the actual test can get challenging at times too! But I'd say it was great for all the family, especially as you can have 4 Profiles per game card.
There are lots of 3 different games in 5 different categories to choose from, each of which have the 3 levels of difficulty. They are all fun, and some are quite challenging! You can receive a bronze,silver and gold medal for each, so it's definitely something to work towards, unless you're just a genius!!
On the main test, it gives you a random game per category, and it combines all difficulties into one test. At the end of the test, you are presented with your Brain Size (which, yes, you should take quite light-heartedly. It cannot predict your physical brain size, which some people seem to think it can!!), as well as presenting you with a Level (A/B/C etc). and what your level of intelligence is equivalent too e.g. a lawyer, which is a fun addition! People need to note though - this game DOES NOT tell you the age of your brain - it's the brain size!!
It's a must buy for any brain trainer certainly! For me, it's better than the Brain Training: How Big Is Your Brain, because there is a greater aspect of fun to it, plus you can repeat the challenges as many times as you wish! So yes, buy buy buy :)