It can be run on Windows and FreeBSD. ( BSD 12.3+ i386 - VS22)
Tested!
Client source/Defines.h
//#define ENABLE_OPEN_MULTIPLE
//#define _IMPROVED_PACKET_ENCRYPTION_
//#define ENABLE_SEQUENCE_SYSTEM
//#define ENABLE_GUI_SHOWER
//#define ENABLE_WOLFMAN
#define CHARACTER_NAME_MAX_LEN 48
#define MAX_HIT_COUNT 24 //16
#define HORSE_SKILL_SLOT 107
#define LSS_SECURITY_KEY "1234abcd5678efgh"
#define CLIENT_VERSION "20181010"
#define LOAD_FROM_D_PATH false // TRUE or FALSE
#define HIDE_GRANNY_SYSERR
#define ENABLE_TARGET_INFO
#define ENABLE_SHINING_SYSTEM