After playing all of the said games, I found that those kinds are unique, innovative, and also successfully delivers the message that the creator initially wanted to convey.
Even though some games uses the same mechanics, probably with a few more tune up, as other more generic games, the experience it gives is richer.
The idea of translating a real social situation or historical events into a game, will give the player a different feeling when playing it, given that it probably gives a sense of parody to the players about the said situation or events.