"1979 Revolution: Black Friday" is a video game about the 1979 revolution of Iran. I personally think that its not actually a game, its an interactive story. You play as a photographer. With each photo, some information appears - about the customs of Iran, leaders of revolution, political organizations, history and ...
The game part is very short. If you avoid reading the information which appears after each picture, it takes less than an hour to finish it, but its exactly that information which makes the game especial.
The antagonist, Asadollah Lajevardi, who interrogates and tortures you in prison, was the actual warden of Evin prison in Iran (were I myself was imprisoned many years later!) and known for his cruelty.
The game has two possible outcomes based on your decisions.
If you are interested in the history of Iran, I suggest trying it.