This curious little game depends on magnetism for its play mechanism. Each player gets 6 little balls (called Clickets) with magnets inside them. four of the balls are bi-colored, so you can tell which end is which. However, the remaining two are a uniform color, which means you can't really tell which end is north or south in terms of polarity. There's a nifty wooden board with a grid of 3X4 shallow depressions. The game is simplicity itself - take turns placing a Clicket. If you cause two or more Clickets to click, you have to take them back. The winner is the first player to get rid of all his Clickets.

From the back of the packaging strip (also in Dutch and German):

How to play CLICK-CHEK
In turns, one CLICKET is placed on the board.
The player that causes CLICKETS to click together has to take these CLICKETS back.
The player who first is rid of all his CLICKETS is the winner.