I have ported my crane simulator 'the little crane that could' from iOS to MacOS.
The game is currently under review by Apple, and will be live in the store any day now.
It features a highly realistic physics simulation, with 20 levels of gameplay (of which 6 levels are free to play).
A video showcasing the highly sophisticated physics simulation is here:
More info at the game's homepage.
Once it comes out, try it out for free.
Or try the iOS version for free right now at the app store.