In the first game we have a travel across the united states with a bunch of different kinds of settings and the second game is located in Seattle with a rainy and gloomy kind of feel. I feel the third game should be located in the American southwest and a section of the game should take place in Vegas. A dessert setting could add a lot to the game and it could almost have a Mad Max kind of feel in certain spots. A shootout in an abandoned casino would be fun and the last part of the game could even take place in Mexico.