Along similar lines are some of the Paradox Interactive games, specifically Europa Universalis and Hearts of Iron. The premise is that they start with a fairly

Along similar lines are some of the Paradox Interactive games, specifically Europa Universalis and Hearts of Iron. The premise is that they start with a fairly accurate representation of the world at various critical moments, and from there, some kind of alternative history takes place. The simulation itself is quite interesting (with things like justifications for wars being a major focus), and the game is sprinkled with fascinating real historical events. Many of these play out as they did in real life, but many also have alternatives. One is often led to a Wikipedia rabbit-hole following them.