That's in Blitz?
Yup, 100%.
You really get a lot of detail, not just out of those high-detail textures, but also out of how you're combining them. A good starfield will do a lot as well.
Exactly... although hi-res textures are needed, you also have to combine lot of stuff together using many blend modes to get the final effect and functionality. And yes, starfield and nebula(s) will make it look lot better. Now it's just floating there... background gfx is always important.
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And to clarifyi: modern game 3D-gfx uses for example all kinds of mask textures, like for specular/glossiness and many other maps that define the look of the 3D-model like bump/normal maps, even parallax maps. Not to mention alpha, additive, multiplicative, m2x etc blend modes... as you can see the days of "hey let's just slap one small diffuse texture on it and that's it" are over - at least if you want to make eye-candy gfx.