Now this one just looks cool. If you're interested in mechanical engineering and how machines work, especially different sets of interconnected gears, you'll want to check out Spintronics. It's a new game that is all about these devices that's up on Kickstarter now.
From the campaign:
Spintronics is a new game (ages 8 to adult) from the makers of Turing Tumble where players build mechanical circuits to solve puzzles. Players feel the pull of voltage and see the flow of current as they discover electronics in a tangible and deeply intuitive way, using the first physical equivalent of electronics ever built. It’s fun, fascinating, easy-to-learn, and irresistible to play.
Electronics is the foundation of modern technology, but it’s an especially difficult subject to understand. That's because it's so abstract - it can't be seen or felt - so we have to rely on advanced math to understand what’s happening, putting it out of reach for kids and most adults. That’s so unfortunate because there are few subjects as naturally compelling as electronics. Electronics is about bending raw energy: splitting it, storing it, multiplying it, reversing it, and shaping it to your will.
The game's well over 10x funded with 21 days left to go.