Summary: Was expecting some sort of fluffy game, but was pleasantly surprised that this is proper Mensa stuff (written/authorised by Mensa). Bit too much for my small children, but a good mental workout for me, and will be useful later for the kids.
Summary: It's great fun, with a variety of activities to exercise "the little grey cells", from five categories: literacy, numeracy, visual, memory and logic. There are 20 graded activities in each category (I think - I haven't got to 20 yet so there may be more at another level!).