I bought this along with the dragon and catapult to complete the imaginext castle. All of the toys interact with the castle which my 4 year old twins seem to enjoy. They especially love battering the castle with the ram and firing the discs at the castle to hear the warnings the castle shouts out when these toys are activated. Seems very well made & durable as do most of the imaginext toys, not sure how long the discs will last though, as being quite small they have a tendency to get lost. All in all, good value and would recommend buying it if you already have the castle.