The Recreated World A Research Question

While reading this article about the prospects of a nuclear Iran, I noted that Kennedy estimated the odds of a nuclear war during the Cuban Missile Event as “‘‘between 1 in 3 and even.”

Using either that or some other potential apocalypse, can you think of fictional scenarios in which the world is somehow recreated as it would be imagined to be, through simulation technology or similar, and a character recognizes that the true life is absent? Not The Matrix, more like The Man in the High Castle in that the disaster has to be a counterfactual real. [xp@tv]