User blog comment:Damac1214/Why Call of Duty is Call of Duty, Fallout is Fallout, Halo is Halo, and that they aren't going to be changing anytime soon/@comment-1263839-20130316191748

I thought for Fallout 3 they just recycled Oblivion, made a few improvement and turned everything brown.

Good for innovation within it's own series, but if you bring TES into account, it's nearly the same game.