right-click and then click "key!" on lvl 15 if its the 1 wwith orange lines then keep the mouse on the line when you go from penguin number 1 to penguin number 2
what is in lvl 24? when you ppl are askingme what you need to do in a lvl, then say what iit is ofa kind of lvl, like lvl 10 you can say "that one with the rope"