When man vanishes, what will Earth look like? I worked with two post-apocalyptic role-playing games in the 1980s and 1990s: Mutant and Wastelands. They each introduce settings in which the current civilization has been destroyed, resulting in two dissimilar game worlds, the grim and serious Wastelands Europe and the less serious Pyri Scandinavia.
However, after watching this video, I realize that my background research was insufficient, particularly in the Wastelands setting. For instance, there would have been extensive problems with the plentiful hydroelectric power stations in northern Sweden: cracked dams, flooded river valleys, and swamped riverside towns.