I'd agree Sophie. I hadn't even thought about them, until I had to test them, and then they became fun but also got my brain working.

I have brain age for my DS.  Its pretty cool, actually.  I've racked up quite a few hours on the john playing sudoku.

Whats everyone looking at me like that for?

No one is look at you Mike, we promise.

Heather: this is exactly what I love about my job!

My Nokia E63 phone has one. I got bored of it very quickly as the instructions are often confusing (it doesn't understand the input device on the phone) and the screen resolution doesn't always show the text clearly enough to do the puzzles.

I like the idea, if that is something positive to say on the subject!

I have to say that I really got addicted to Nintendo's Professor Leyton's product on DS which was all about brain training and solving puzzles in order to solve the mystery. 

Our own Junior Brain Trainer on DS has proved to be incredibly popular - reaching UK No.1 budget DS product on at least two occasions in 2009, proving that such products appeal to people of all ages . Personally, I have never had any interest in games on PC or on console until the DS came out. Nintendo has been very clever in attracting non gamers of all ages to their DS platform and encouraging the development of brain training/puzzles games has been a major part of their strategy

@Dave : In an age of super-wizzy graphics games consoles it is amazing that with both the DS and the Wii Nintendo have shown that what really matters is playability. It is an important lesson (that I am sure MS & Sony have learnt) that you need to create something that feels natural to use (I have memories playing Micro Olympics on the BBC - running by continually pressing Z & X - nothing about that game felt natural to use).

With these brain training games I think the portability of it has been the thing. However, no one has mentioned brain training type programs on the PSP.

@Dave: I must say I enjoyed Prof Leyton a lot as well!