into a mod template, making the map playable almost immediately. Technical Strengths and Limitations
MapGen v2.2 is a community-developed tool for generating custom maps in Hearts of Iron IV (HOI4) that features a streamlined GUI, documentation, and specific image requirements. Rather than an academic paper, the project documentation consists of Reddit announcements, a Steam guide, and an updated video tutorial. Access the full project guide on the Steam Community .
| Feature | Vanilla (1.20+) | Mapgen v22 (Tectonic) | | :--- | :--- | :--- | | | Fragmented, infinite sprawl. | Continental, distinct shapes. | | Mountain Height | Y=120~256 (variable). | Y=256 (common), Y=320 (peaks). | | River Logic | Noise-based, often broken. | Channel-based, realistic flow. | | Ocean Depth | Shallow (Y=40~50). | Deep (Y=-40~-60). | | Cave Density | High (Cheese/Spaghetti). | Moderate, terrain-adaptive. | | Visual Style | "Fairytale" / Rolling hills. | "Fantasy Realism" / Grand scale. |
Maps must typically be in multiples of 64 (e.g., 1920x1088) to be compatible with the game's rendering engine ( Reddit ). Where to Find It