Barrel Roll is a tricky wooden puzzle. There are four columns with coloured balls in and the aim is to line up the balls so each column is made up of only one colour.

Two central disks rotate around and there are chambers at either end that you can use to help move the balls from one column to another. You'll soon discover that completing one column is easy enough but as soon as you work on the next column the first becomes mixed up!

A fun and potentially frustrating puzzle, Barrel Roll can be replayed over and over again and makes for a good desk puzzle.