New IPs (Intellectual Properties) come and go in any media. Movies have their John Carter of Mars and Vampire Academy. TV has their unpopular spinoffs like The Lone Gunman , Trust Me, and Rubicon. They try to capitalize on a franchise or build up a new one, they are either over-ambitious and over-optimistic to the point where they just can’t live up to what they were trying to bring to the audience, or they are overly simplified and uncreative, bringing nothing new to the table and not creating enough substance to keep an audience entertained long enough to last even a half season.
Games aren’t any different than more traditional entertainment. There’s a build up of all of this news and press about how the game looks great and plays well but once it’s time for the game to be released, all of that buzz evaporates into a white noise of simply going unnoticed over the wash of other games that get released or older games that people go back to. Although, some games do tend to keep up with the perpetual hype distortion field that it generates for itself and they continue to at least pump out something every so often to the combined purchase power of a few million or so fans.