"or is it?"
It totally is. :)
RE: "atmosphere"... totally. That's what I love about this version of SST!!! You've made an abstract game immersive:-) Agreed, missing McCoy. Still, if other elements come to mind, by all means, add them.
My point (if any) is that while I've had other versions of SST buried in various folders... somewhere... on my laptop, your version has a shortcut smack-dab on my laptop screen. The save feature is wonderful too. You've made a version that is atmospheric, playable (more so), and... returnable to with ease.
Thanks:-)