Hey! We did this little thing for the LD jam this weekend using Defold:
It’s my second time using Defold now, and I’m starting to like it more and more! It crashed a few times, but other than that it was a pleasant experience 
Anyway, the game idea is to build an automated recycle plant and uh, make a profit or something(?). We only managed to build conveyor belts and item splitters, but we wanted to make it a bit more sim city-esque where you would build different types of material processors / furnaces that converts materials into energy or sub-materials that is needed to run the facility, factory workers that would run the machines, paid contracts from the city that you could accept in order to generate cashflow etc. But for a ~24h game it’s pretty fun
Here’s the LD site: https://ldjam.com/events/ludum-dare/40/dumpydump-recycling-manager-2017