Minigame - Building buildings!

This one was on our Hmmm list as it is not really a conventional Survival Challenge (as it's easy to stay alive by doing nothing) but we thought it was so ingenuous and original so we Picked it. The idea is that you are a crane operator and you are building a building. Your job is to drop the swinging buildings at the right time in order to stack them, topple the tower and it's all over. Our only complaint is that sometimes the buildings would come out too early and knock our tower :(