Daikoukai Jidai is a prominent Koei franchise that debuted with the eponymous 1990 release, followed by ports in 1991 and 1992. Its highly acclaimed sequel, Daikoukai Jidai II, was released in 1993 and ported to multiple platforms throughout the mid-1990s. The series combines sailing simulation, trading, and role-playing elements set during the Age of Discovery.
Players navigate an open-world global map, managing crew morale, food, water, and cargo space while contending with real-world wind currents and seasonal storms. The initial
Daikoukai Jidai centers on Leon Franco, a young Portuguese captain seeking to restore his family's fallen nobility. Its sequel,
Daikoukai Jidai II, greatly expands the narrative scope by offering six playable protagonists, including the Spanish warship commander Catalina Erantzo and the English cartographer Ernst Von Bohr, each with distinct storylines and gameplay focuses ranging from privateering to geographic discovery.
Acclaimed composer Yoko Kanno created the soundtracks for both
Daikoukai Jidai and
Daikoukai Jidai II, blending orchestral and period-appropriate instrumentation to enhance the atmospheric exploration. These early entries established Koei's "REKOEITION" brand of historically grounded simulation games. The success of these releases laid the foundation for a long-running franchise that eventually expanded into massively multiplayer online role-playing games, cementing the property's legacy as a pioneer in the open-world sailing genre.