The Downfall of the Thief Series
Via Kotaku, an interview at Evil Avatar about the bad end of the Thief series. They discuss the game series with designer Randy Smith, who details the fine points of the early games and the ignoble end for the trilogy of games. From the article: "I view Thief 3's more action-inclined gameplay as being more than necessary for a mass-market acceptance. The problems with Thief 3 were the same as the problems that plagued Deus Ex: Invisible War - it was the tech. The team scaled back the freeform design, incorporated loading zones, not to mention the unstable frame rate and other misc. issues derived from the technology. The gameplay was relatively solid by comparison."
Emphasis mine... Strange, as I have Splinter Cell: Chaos Theory at home. The only way to get 100% complete on any level is to not kill anybody while still completing all objectives.
There are only 10 kinds of people in this world... those who understand binary and those who don't
Don't forget the hitman series. Hitman 1 I don't believe was completable without killing anyone (that damn rambo mission), but Hitman 2 & 3 definitely were. It didn't involve the light meter "hiding" spot stuff so much, but I think between that and Splinter Cell you've got tons of Theif like gameplay available. Both of those games are going to have next-gen sequels too, so the genre isn't going anywhere.
The most devoted Thief fans and fan mission creators are hoping to get the original Dark engine that T1 and T2 uses open sourced so that we could improve it and run it on other operating systems. Most fan mission creators still create missions for T2 rather than T3 since it's so much better and we hope to improve it further, so please sign this: http://www.petitiononline.com/TDPT2/petition.html
In both Thief and Thief 2 and arrow is enough to kill any enemy with a well aimed shot. Exceptions are Burricks and those metal beasts in Thief 2.