Not a space game in any way, but I thought this video was interesting, and the developer's attention to detail in how the game world changes as the game progresses.
Exposing Decades-Old Secrets in The Colonel's Bequest
https://www.youtube.com/watch?v=U2budy3S3MA
From 30min onward, there's some funny Easter egg bugs, and unforeseen consequences when playing the cracked version.