@Matakage , In a UEFN Project, you can only have one “Default Map” at a time. We do not have support for multi-map or loading maps at runtime. You can open the GameFeatureData in your content browser to set the map.
You can build your experience, set the map and publish it. You can create multiple maps and change the Default Map, but you can only publish with one Default Map at a time. This publishing will be to the same game.
