Mappa Mundi is a complete overhaul mod which turns Hearts of Iron 4 into a mapping tool. You can use it to recreate historical borders from the dissolution of the Holy Roman Empire in 1806 to the present day, or create your own alternate history maps, by using toolpack to transfer states between nations and change country names.
To help you do so, we’ve provided a highly detailed, historically accurate map of 1936 as a template. Mappa Mundi also adds over 12000 states, more than ten times the vanilla game, and over 1600 new releasable nations, to let you shape this map as you see fit.
This mod is a complete overhaul of the HOI4 map. It is incompatible with almost all other mods, and it is pointless using gameplay-altering mods alongside Mappa Mundi as it cannot be unpaused. Only graphical and music mods are likely to work alongside MM.
Credits: Jingo Spunk, Foxite, nfaaz616, SupremeHurensohn, Gaffate, Nerfer456