User blog comment:Dash3rd/Six days left for us in America!/@comment-5469467-20121004084303/@comment-5469467-20121005092453

Yeah, Thief was one of the definitive immersive sims (not to mention stealth games). It was Looking Glass Studios, the original developers of the series, who actually made some of the earliest immersive sims like Ultima: Underworld and ''System Shock. I'm pretty sure the term 'immersive sim' was coined around the time of Deus Ex, which is probably one of the best examples (if not the best'' example) of an immersive sim. As a matter of fact, Harvey Smith actually worked on Deus Ex. I guess he knows what he's doing when it comes to games like Dishonored...