Build a world of castle adventure! Easy-click bricks, sticks and panels make it easy to build and rebuild the Kings Gatehouse so many ways, with double-sided snap-in picture panels that let kids choose and change their castle adventures. Fire the rolling cannon, launch boulders from the catapult, drop fire balls from the cauldron! Can enemy invaders battle past the defenses of the Kings Gatehouse? 79 piece set includes two play figures that snap on to the bricks. All pieces in the TRIO Building System work together. Collect them all and build a world of fun!