But not in a graphic design way, such as menus or visual elements like VFX (smoke, fire, energy, etc) but as a basis for the visual creation of the game's visual style/universe.

Does anyone know if something like this exists?

I wonder if there is already a project that mixes the low poly 3D of the PS1 era with a current triple A look or something close

wow! Thanks for the tips people! Im new to bluesky and it really helps! =)