What game was put out a few years ago, possibly as a precursor to Assassin's Creed on PC?

I think I'm going crazy, but I remember playing a PC game years ago that sounds like an earlier version of Assassin's Creed. I tried searching all over the internet, but couldn't find anything. Same idea, you are an assassin sent to kill people in medieval times I think.What game was put out a few years ago, possibly as a precursor to Assassin's Creed on PC?thief.What game was put out a few years ago, possibly as a precursor to Assassin's Creed on PC?i think it just a game that coincidently look like assassin creed but it have nothing to do with assassin creed. i don't know