If you thought Su Doku was the biggest and most addictive craze sweeping the country, then you have to get your hands on Tantrix. We opened it up and started playing, and within half an hour everyone wanted a go - be warned, this is a highly addictive game. Like all truly great games, Tantrix is very, very simple to play, it can take from a few seconds to half an hour to complete a game, it's highly compelling, and yet there are very few rules. Containing a series of hexagonal tiles, each marked with a series of coloured lines and curves, Tantrix is a puzzle solving game. You can't just play one game, it really isn't possible. The second you've jubilantly completed your first puzzle, you just have to do another.

Tantrix Discovery is the basic starter set. It comes with a 10 tiles in a neat chrome desk-top holder and is the one that if you've never played before, will let you in gently, get you utterly hooked, and make you want to get your hands on Tantrix Xtreme which is much harder.

Tantrix Xtreme also has ten tiles, but unlike Discovery, it comes with no clues, so will get your grey matter steaming much harder.

The Tantrix Game Pack is for true devotees, with not 10 but 56 unique, colour-coded, numbered tiles, along with some near-on impossible puzzles. For Su Doku junkies it's the equivalent of a fiendish Killer Su Doku puzzle. As well, the Game Pack is not only a set of puzzles for one player, it also contains the fascinating Tantrix game, which is equally good as a serious strategy game for two or as a fun family game for up to four players."

Tantrix is so utterly compelling that once you've started it's pretty well impossible to stop.

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