Kings, knights and soldiers. All protecting a fortress. It is your mission to collect the maximum points by toppling them all with smartivity smash and topple catapult, the coolest stem, Educational, learning, science, diy toy kit from smartivity for 6+ year olds. This dynamic educational toy offers children all the flexibility to experiment with gravity, trajectories and elasticity. Once constructed, children can choose the force with which they want their soft missiles to travel and hit the fortress and its protectors.

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