As previously mentioned, Shadow of the Colossus, for reasons they said.
Fallout is also good as it holds the vast ironies of early 1900's Red-Scare and 'Golly Gee Whilakers!' that is opposite to the harsh reality of post-apocalypia. Some good points are how levels of morality can be used to aid/destroy, the vagueness of NV end choices (That allow for different interpretation), religious conflict (Brotherhood), racial problems (Mutants) and simply humanity's will to survive despite their harsh environment, going to extremes with each other and governments in a desire to try and maintain a new American Empire.
Fallout is also good as it holds the vast ironies of early 1900's Red-Scare and 'Golly Gee Whilakers!' that is opposite to the harsh reality of post-apocalypia. Some good points are how levels of morality can be used to aid/destroy, the vagueness of NV end choices (That allow for different interpretation), religious conflict (Brotherhood), racial problems (Mutants) and simply humanity's will to survive despite their harsh environment, going to extremes with each other and governments in a desire to try and maintain a new American Empire.