I love a good puzzle game but it was hard to see what i was missing to connect, was pretty sure i got all of them in 7 but oh well. No sound either would have been nice for a chime at the least when connecting. overall 3/5
great question. I wish I really could answer that since designing puzzles aren't my forte but maybe a timer or maybe a number of wrong attempts if not already implemented? Could get rid of the line too not sure though