Sports games are usually either medal winners or they falter soon after the starting pistol fires.

Mario & Sonic at the Olympic Games, for the Nintendo DS, would probably take bronze.

Rather than being the all-out fun-fest you'd expect -- since both characters have featured in brilliant games -- it's a bit disappointing.

You can play more than 20 sports, both Olympic and "fantasy", with around a dozen characters -- and the whole thing looks great.

But the controls aren't up to the same standard, the mix of button-pushing and stylus-swirling quite frustrating on some events.

A few like cycling and archery work quite well, but too many others either don't work on the DS or soon grow repetitive.

Professor Kageyama's Maths Training.

I can't understand why anyone would do sums in their spare time but the success of games like this proves many do.

My eight-year-old daughter, addicted to the likes of Cooking Mama and Animal Crossing, won't put this Nintendo DS title down.

Evidently it's all about calculus, based on a system of maths problems combined into a 10 x 10 grid, and it's good for the brain.

Georgia doesn't care, she's too busy scribbling down numbers as fast as she can and cheering herself when she gets them right.

This is a slick little game that should please both children and adults, and I can see it really appealing to Sudoku addicts.