I always found it odd when a game that has a bad base idea tuns out really good. Honestly, the thought of Red Dead Redemption's idea of an open world, western, action-rpg sounded pretty bad. (Mainly the western part) Other games like this were 3D Dot Hero Game for the PS3 which was basically a zelda clone but origionally it seemed like some sort of weird rpg with a graphic idea instead of a real idea. Both of these games turned out either incredibly good (my opinion) or generally good (most other people's opinions).