The Geomag (779) Mechanics Challenge Strike is available from Coolshop for £49.

Learning about the amazing world of magnets and mechanical construction with a super fun game in the Geomag Mechanics Challenge Strikel! Build the construction first, and then be ready for hours of fun either alone or in competition with others, where precision, timing and dexterity are the key to victory. With as many as 185 individual parts, both the construction itself and the subsequent gaming experience are challenging and educational for everyone involved. For 1-4 players. From 7 years.

We highly recommend this fantastic product. Great fun which also educates.