This is a level I made in Mega Man Maker (Level ID: 582102). It's an open 'metroidvania' designed around using the Wheel Cutter weapon. It takes place in some distant-future city that was once prosperous, but after a catastrophic event, it is now left in the hands of nature and whatever robots still function. Mega Man explores this empty city, looking for treasures and useful upgrades. I think I'm happy with it, though I still want to make a super-hard version...
Below is a full playthrough:
And here are the maps I made for it. They get progressively more detailed/spoilery, so if you intend on playing this map, you might want to avoid them:
