realistic Environments with some SciFi elements,
like in Stalker.

SciFi Elements are needed at some point, to intruduce unexpected
twists in the Environment,
but too much SciFi make the whole enrironment unbelivable,
and replacable.

Some small recent games of mine:
Griefer 4k http://damocles11.byethost9.com/griefer4k.html
Kobold 4k http://damocles11.byethost9.com/kobold.html
Cave 4k http://damocles11.byethost9.com/cave4k.html