There are lots of spiritual successors like
Demon's Souls -> Dark Souls, (this one feels too close to really count almost though)
System Shock -> Bioshock. (Never played System Shock so I can't comment too much on it.)
I want to talk about a wild one though.
Jak and Daxter -> Mass Effect
I've often thought about Jak and Daxter leading to Jak II/Jak 3 leading to Uncharted, but Mass Effect has a few more similarities to Jak and Daxter.
Don't read this until you've played the latter games!
Lots of fun little similarities between the two games.
Demon's Souls -> Dark Souls, (this one feels too close to really count almost though)
System Shock -> Bioshock. (Never played System Shock so I can't comment too much on it.)
I want to talk about a wild one though.
Jak and Daxter -> Mass Effect
I've often thought about Jak and Daxter leading to Jak II/Jak 3 leading to Uncharted, but Mass Effect has a few more similarities to Jak and Daxter.
Spoiler for first game:
Don't read this until you've played the latter games!
Spoiler for Jak II+3:
Lots of fun little similarities between the two games.