I loved soul reaver.
I loved the idea of two separate worlds that run side by side. I loved the concept. I loved the world itself and the way you could be good or evil. I loved the atmosphere.
I thought the story left a bit to be desired, but hey! There are other Soul Reaver games that explain a lot more of the story and also one for the PC that's a bit old now. That explains how Kain double crossed them all I think.
I love it