I found out about this website a little while ago and have become completely enamored with it. It’s fun and challenging. The basic object of the game is to build a ‘contraption’ to get the red ball to the goal. Along the way you will encounter obstacles and other challenges including gravity. The website is Fantastic Contraption

I know all the engineers out there will have a fun time with this one. I could only make it through a few levels without sneaking a peak at some of the other designs that people had come up with. Here is one of my favorites. I like to call it The Windmill. Enjoy and have fun.