It is a simulation and role-playing video game series dealing with sailing and trading, themed around the Age of Discovery.

In the games, the player takes up the role of a captain (or commodore in some translations) and manages a seagoing fleet to participate in trades, privateering, treasure hunting, exploration, and plain piracy.

The game series makes many references to the historical background, although much like Pirates!, the more treacherous details of the era are idealized to create an adventurous and exciting mood.

In the first game of the series, the player assumes the role of Leon Franco, the young, ambitious son of a noble family fallen on hard times in Portugal.

With increased fame, Leon can complete tasks for the King of Portugal and gain higher titles of nobility.

Also set in the 16th century, this game is a sequel to the first title and was released for the FM Towns, X68000, NEC PC-98, Super NES, Mega Drive/Genesis and PC in 1994.

The Super NES version was released on Wii's Virtual Console service in Japan on March 17, 2009, and in North America on April 6.

Reviewing the Genesis version, GamePro deemed the game an acquired taste due to the bare bones presentation and frequent money-managing.

The game starts in the mid fifteenth century and allows for the player to make historical discoveries such as the New World or a route to India as well as conquer civilizations like the Aztec and Inca Empire.

Perhaps it is due to these dramatic changes that Daikoukai Jidai 3 left players uncomfortable and failed to achieve much popularity even within Japan.

Released in 1997 on PlayStation and Sega Saturn, the game uses the same engine as the II, and focuses on the story of two characters instead, further expounding upon the loose plot that ties the series together.

This version adds the following: Rota Nova was released by KOEI on March 23, 2006, for the PlayStation Portable and Nintendo DS.

This is a remake of Porto Estado for handhelds: It is a mobile phone version of Daikoukai Jidai IV series.

Uncharted Waters Online offers much of the same gameplay experience seen in the single player games in a multiplayer environment.

Gamecity (Koei Tecmo Games), DeNA Mobage, Niconico Appli (DWANGO Co., Ltd.), Hangame (NHN hangame Corp.) GandromedA (gandromeda inc.) BLUE PANDA Network Technology Co., Ltd Cayenne Tech (Cayenne Entertainment Technology Co., Ltd.) Mobile versions: Koei Tecmo Games (Android, iOS) mobage by DeNA (DeNA Co., Ltd.) (Android, iOS) VGAME (China Mobile Games and Entertainment Group Limited) (Android, iOS) Cayenne Tech (Cayenne Entertainment Technology Co., Ltd.) 2014-11-13-2014-11-19 (VIP test)[4] 2015-01-15 2015-01-21[5] 2015-01-21 (closed test)[6] 2015-02-05 (open test)[4] 2015-02-05 (final version)[7] 2015-04-28-2015-05-10 (first beta)[8][9] 2015-06-16 (second beta)[10] Mobile versions: 2014-07-01 (Android) 2014-08-04 (iOS) 2015-01-13-2015-01-20 (final closed test)[11] 2015-02-05 (first open test)[12] 2015-04-16[13] It is a free to play web browser game and a sequel to Daikoukai Jidai IV series.

[16] Released on September 26, 2019, and only available on Google Play and App Store (iOS), it is the sixth numbered title of the series.