A great game if you like logic puzzles.

It is so satisfying to build a machine that just works. It's like, you're working at it and working at it, and everything seems wrong and bad, and then it all just comes together. And you're done. I mean sure, you can make it a little more efficient, or a little "cheaper", but you found a functional solution and can now move on to a more difficult problem. And if you run out of problems to solve (i.e. you finish the game) there's always new problems to solve in the Steam Workshop. Many of them are much harder than anything you'd find in the base game and require you to think creatively. Or you could make your own problems to solve, and challenge others too. Designing a problem can be a lot more fun than designing a solution.

Apparently I should've studied engineering instead of psychology.

Here's a link to a moderately difficult puzzle I just uploaded to the Steam Workshop: https://steamcommunity.com/sharedfile...
And here's a simple one I designed almost two years ago: https://steamcommunity.com/sharedfile...