No, Silicon Knights also released two PC RTS games- Fantasy Empires and Cyber Empires. Then came Blood Omen: Legacy of Kain, and Eternal Darkness. They had also started working on an original title with a character named Raziel a while back, but Crystal Dynamics didn't think the game would sell by itself so they took the game, gave Raziel the Soul Reaver, slapped the Legacy of Kain name on it, and released it, I believe- I think that's what also started the court case SK had with CD over the rights to Legacy of Kain, but SK dropped the case when Nintendo offered them to chance to become a 2nd party.