Question

Why is the game image of the setting sun most likely not described in great detail in

Answer 1

they (the game creaters) probably  were looking at the bigger picture and not focusing on the minor details or what i mean is they more than likely thought little about it

Answer 2

In literature as well as in art, there are many natural elements such as the sun, the stars, the flowers, etc. that are used symbolically and also to beautify the imagery.

In the case of both the sunrise and sunset, we can understand that these represent a cycle, the beginning and the end of something or somebody.

Thus, in the case of "Because I Could Not Stop for Death", the image of the setting sun is not described in great detail because the context of the poem gives us the idea of a cycle that ends, that is to say death, and death itself does not require much description.