Just Cause is purely fictional. It's created for entertainment and doesn't draw from real events. The exciting scenarios and adventures are all made up by the developers.
The duration of the story in Just Cause 3 isn't fixed. If you rush through the main missions, it might be shorter. But if you explore and do side quests, it could be up to 40 hours or more.
The story duration of Just Cause 4 isn't fixed. Generally, you can expect to spend around 25-30 hours to finish the core story. However, if you're a completionist and want to uncover every nook and cranny, it could easily take you over 40 hours.
Just Cause 3's story is quite extensive. It offers a substantial amount of gameplay. Generally, players report spending anywhere from 15 to 40 hours to fully experience the story and its related content.
Overall, the story of Just Cause 4 is decent. It has an interesting plot with various twists and turns that keep you hooked. However, some might find it a bit predictable in places.