I've always been fascinated with this game as I understand the plot is fairly elastic and the sequence of events and scenes different on every play-through. Has someone managed to map out all the possible variables and varieties?

I completed the game on original release 2 or 3 times so I am not really spoiling it for myself...

A really good one is this one by JakeSteven1980, which has also been updated quite recently:
https://gamefaqs.gamespot.com/pc/196769-blade-runner/faqs/73383

Thanks... think I remember this one when I was still playing the original! :) If I'm right, this was the most comprehensive thing you could use at the time to guide you through the game. At the top it says "things can change" as a bit of small print. That's the bit I'm interested in... what changes, why and how.

Thanks for this one - this is awesome and just what I was looking for... so many possibilities I missed in the old days...

(SPOLIER ALERT)

Well, I just completed this and got whole chunks of scenes and dialogue I didn't remember, plus a totally different ending. Checked out the guide and I think I ended up being a "Real Bladerunner" this time (through sheer incompetence - Steele did all the actual shooting). Previously, I think my run-throughs had all been "Replicant Sympathiser". I do remember previously, getting a chance to complete the 3rd ending but never figured out how.

(MORE SPOLIERS)

Lucy died this time, and I don't know if she was a replicant or not... I feel bad... very bad...