Apparatus - Create complex machines and do the job! Connecting the battery to the motor, make a bridge, build traffic and move the ball. Creative construction, interesting design. To show their knowledge of physics!
Apparatus - it's time to show off their knowledge in physics and engineering skills. Design a mechanism that takes the ball in the right place. Believe me, in front of you waiting for quite unusual design.
Enough unique game which is capable to combine many genres, to be precise, it is a complete sandbox, which will cause a genuine interest!