4.5 Fantastic! AngrilyHot | 23/11/2010 | See all AngrilyHot's reviews (53) I bought this on a whim recently after seeing it at a much reduced price, and I am absolotely bowled over by it!Basically, there is a grid 3 x 3 which light up in either red or blue, and you have to rearrange the lights to match a given pattern. The way that you "shuffle" the lights is quite clever; at first (after seeing the pictures) I assumed that you twisted the top face 90 degrees, but this is not the case. By PARTIALLY turning the top face in one direction it will move all the lights on one space - except the middle light - so you do not really twist it, instead you kinda "nudge" it in one direction. Additonally, rather than twisting it 90 degrees, you can also "push" it up, down, left or right to move all the squares on 1 space in that direction. (If the light is one the edge it reappears on the other side) Don't worry if this sounds complicated - it is really very simple and quite intuitive.With 3 difficulty settings and 9 volume levels, this is a cracking little stocking filler! Buy one today!