Lots of ideas run through the mind as you play this game. Building your own is hours of fun.

I do not know if this was designed as educational software, but it is certainly is instructive. You got to THINK, and some solutions are trickier than otehrs. When you finally assemble a machine it strikes you how obvious it is. This game has developed a cult following. And you can see why. There is no storyline to speak of. Only a puzzle after another. Because when the puzzles are good, a storyline is unncessary. So go and relearn your physics. And wonder how many of those you could solve with pen and paper.