Kain is deified. The clans tell tales of him. Few know the truth. He was mortal once...as were we all.
I wouldn't go with those, Soul Reaver 1 doesn't work on my Win7 system, the PC port is fucked and the soundtrack goes cacophonic because they screwed up the sound. It turns into a Tony Jay rap whenever there's a voiced cutscene because the game decides that sounds will carry over forever on top of each other.
There is no Blood Omen 1 for Steam either, and yet BO1 on PC is the best way to play (relatively easy to run with fan patches and no loading times).
Every time I play a Legacy of Kain game, I'm left with the bitter taste in my mouth of remembering that the entire series stopped getting made just before the final game, Tony Jaa died, and now the series is an online third person shooter.