Anandtech takes a look at a bunch of exciting games that seem to have vanished from the earth since their initial announcement. An example of such a game is Darkest of Days:
This screenshot may give many gamers the quick impression that Darkest of Days is just another wartime shooter, but it most assuredly is not. In fact, the Civil War era shown here is only one of a series of time periods your character will visit over the course of the game. However, it is a first person shooter, though it's centered on time travel. The premise of the game involves your character being sent back in time to alter some of humanity's most pivotal events for the better in an attempt to change the world.
While screens depicting some of the other time periods would be interesting to see, only a few depicting the Civil War period were released when the game was announced in July of last year. This of course may have been representative of the fact that the game wasn't very far into the development process. Whatever the case, developer 8Monkey Labs has done nothing to promote the game in over a year, save for some blog posts that tout the revamping of their site. PC and Xbox 360 are the intended platforms.
Check it out over here. And no, they didn't include Duke Nukem Forever because they wanted to give you a list of lesser known games.