Can you make a doom like game?

How do I...?
1

Im thinking about eventually making a Doom like game but I’m wondering how I could get the resolution effect (object far are only made of about 6 pixels while objects close are made of 100s) I’m asking this because the obvious way is to make the resolution of the game small but I think it would make it blurry or look bad.

2

In your place i would try instead of assuming
You confuse scaling with resolution

Floor

tiled_Grass5
tiled_Grass5100×100 168 Bytes

Background

DuckHunt
DuckHunt480×317 2.68 KB

And only thing stopping me from making enemies 3d sprites that face player or low poly models is my lazyness