If you grew up loving the Incredible Machines series and its crazy puzzles, then you’ll love this Bundle Stars deal on the Crazy Machines franchise. They’re essentially its modern-day equivalent, and this bundle gives you a bunch of its content for $4. For that $4, you get CM 1, 1.5, 2, and tons of DLC for the second installment. That equals a great many hours of entertainment with Rube Goldberg-esque devices for a minimal amount of money. Everything in the bundle is available via a DRM-free Windows download and on Steam, so if you’re looking for more things to add to your Steam backlog, this is a good way to do it.