This strong hold. In this exciting challenge of engineering, players build their own roller coaster. To begin, choose a letter of challenge and assemble the pieces as indicated in it. Then, the remaining players use the pieces to build a mountain Russian construction that works and comply with the conditions listed in the letter of challenge. Roller Coaster challenge integrates elements of a puzzle of logic, to the time that leaves to unleash the creativity through the free construction. You once you've solved every challenge, see how the car of the Russian Mountain Slides over the track and through the different drops, curves and loops.