I don't know if anyone else here has played Planescape: Torment, but when thinking about what made SMAC such a satisfying experience, a few parallels sprang to mind.
In each, the game was a 'non-standard' version of a well-accepted genre (CRPG/4X respectively.) In each, new and interesting game mechanics were tied into the unique setting and 'worked' for that setting, whether they would have worked for a generic game or not. in each, the evolving story was as much part of the reason to keep playing as the challenges of the game itself. And in both cases while critically acclaimed they never made as much impression as their more vanilla counterparts (the Baldur's Gate/IWD series and the CIV series) respectively and weren't followed up (I'm trying desperately to forget SMACX was ever made
)
Anyhow, just a random observation subject to comment if anyone else out there knows them both?