Oh my God !
Finally finished Myst III. And I am traumatized!
I think the best thing in this game is that the "bad guy" isn't all evil. He's a simple human being, and he suffered, and well, I pitied him ! And I was so sad when I left him stuck in a small room for eternity ! And then I figured out a way to make an happy ending for everyone after getting killed in the process a thousand times, and I was all cheered up because he was my friend now !
So yeah. Maybe I'm a bit too sensitive. :o)
But Myst is definitely an awesome game. Buy it. It's great.