People always give me a long, confused stare when I tell them @sellingsunlight is being made with RPG Maker, not Unity.
Let me explain you how we're accomplishing this result with such a nimble engine.
First, credit where is due: @Quxios made tons of plugins that will help you improve RPG Maker's look, and you can use them for free even in commercial projects! 💕
We use Qmovement for pixel movement/collision maps, QYscale for the perspective effect and Qsprite for animations.
So, first step: we scan our art assets. Chiara (instagram.com/chiaraboscaro/) paints everything by hand on a single sheet of paper, because that's easier for her.
Here is a scanned background.