As air masses climb over high-elevation ridges, they drop moisture on the windward side, leaving the leeward side arid. 3. Biome Classification Matrix
Adjust the slider to dictate the default density of your provinces.
Set a defensive floor by raising the to prevent microscopic, unclickable areas.
MapGen v2.2 is stable, faster than v2.1, and suitable for [your use case]. Recommended for production if you don’t need [missing feature]. mapgen v2.2
Which of those would you like?
For devs: upgrade for the constraint solver alone. For players: if a world feels coherent, thank the v2.2 rules — not just the noise.
MapGen v2.2 is packed with features that distinguish it from its predecessors (v1.x and v2.0). Here are the most impactful additions: As air masses climb over high-elevation ridges, they
The API remains largely backward compatible, but note these breaking changes:
Are you planning to build a or do you need help troubleshooting a map generation error?
: Creating too many small provinces can cause the game to crash during loading. Set a defensive floor by raising the to
That magic was MapGen v2.2.
Easily plug in custom tile sets (top-down, hex, or isometric) with improved texture atlas handling and tile transition logic.
For the Hearts of Iron IV community, MapGen v2.2 is the go-to tool for transforming an image into a functional game map. It significantly lowers the barrier to creating ambitious total conversion mods.