Hi! Thank you! The renders were made in Blender. The scenes aren't included, but the source files (.blend) come with each 3d asset pack, and might have the same render settings used in the rendering of the showcase images, which could be used as a reference (more or less) while setting up the lighting and the post processing settings in the game engine.
If you're looking for more references, or inspiration - I recommend checking out the gallery of games featuring my work: https://pizzadoggy.itch.io/the-galery