Instruct: Classify a review into positive or negative sentiment.
Query: kept collapsing!!

My 51/2 year old son was so excited to get this toy for Christmas--but what a dissapointment for me. I spent a long time putting it together and then as soon as he plays with it, if one peice pops off during a sword fight--and he tries to fix it the whole floor collapses. Then to fix the floor you have to unhook the base--and the other floors collapse---AUGHHH what a HUGE frustration. HE was constanly trying to rebuild a heap of peices. We got the pirate ship too--and it was GREAT!!! It was more sturdy--still lots of building options and details--but you could actually play with it--move it around and stuff without having it all tumble apart. The castle has so much fun detail--but it is not usuable for play--not sturdy enough!