yeah that would be interesting, maybe it is simple to do, we just gotta know how they program it and stuff and what programs they use to draw the sprites, but not sure if they use a separate program to test the animations.
I dunno, I have a theory that 2-D games like Portrait of Ruin and Order of Ecclesia, use a game engine, which is like a programmed system of tools to make a game, it would include graphics programs, control programs, backgrounds, linking areas, abilities, inventory management, etc.
But anyone here think it's pretty easy to make a good looking Castlevania game (on par with PoR or SOTN), if we sort of discover the "keys" to developing a game like them?