source_of_the_sovereign/src/include/constants/pymap/map_types.h

#define MAP_TYPE_NORMAL 0x0
#define MAP_TYPE_DORF 0x1
#define MAP_TYPE_STADT 0x2
#define MAP_TYPE_ROUTE 0x3
#define MAP_TYPE_HOEHLE 0x4
#define MAP_TYPE_UNTERWASSER 0x5
#define MAP_TYPE_TYPE_06 0x6
#define MAP_TYPE_TYPE_07 0x7
#define MAP_TYPE_INNEN 0x8
#define MAP_TYPE_GEHEIMBASIS 0x9