Simple but fun. Well, no music (-1 Star) is one thing.
But what I hate the most is that I cannot move the objects when I place them by mistake, worse, if I get a failure, I'm forced to reset and start all over. No pipe assembly or Rube Goldberg games which don't have parts moving feature when people makes mistake. (-1.5 Star) You do the math of what I'm talking about.
For the next version, I'm expecting including the other players will need to see this part moving feature exists. All people want is to figure things out like a good old puzzle, without having to suffer this major annoyance. Please fix that.