Tinkerbox is a free, fun-to-play physics and engineering game and puzzle app that puts you in the role of inventor, problem solver, and engineer extraordinaire.
Tackle the forces of physics to solve mechanical riddles or create amazing 3D contraptions. Whether inventing or solving, you can test your gadgets in a 3D landscape and share them with friends.
Once you start tinkering with TinkerBox, you’ll never look at engineering the same way again.
Via John Evans