This is actually qualified as a cancelled movie release rather then game, but still equally as interesting; Gears of War the movie, about roughly 4-6 months into the production the movie was canceled and what I fear may happen to the recently anticipated Bioshock movie.
For those of you that don't know the current problem with the Bioshock movie, the director can't seem generate enough pay to recreate Rapture through CGI. The only way to get the money from big name companies was to lower the rating and change the movie from a rated "R" horror film to a "PG" action film and he pretty much gave them a nice big "F**K you" and declined now leaving him in a predicament. Hopefully the movie will still be made and in it's intended form, not this PG13 action BU*****T.