User blog comment:JAlbor/Dishonored Interview Opportunity/@comment-75.51.176.50-20120930181332/@comment-99.159.4.25-20120930201710

12 hours if you rush 24 if you take your time and do everything you can in a single playthrough. When the game ends its over. The game has a lot of replayability though in the form of multiple endings, the numerous possible ways to handle the missions, the fact that you can't get all powers in a single playthough, randomized clue and target locations, harder difficulties, altered dialogue based on your chaos rating, and other various aspects designed to give the game a ton of replayability.