1. Koudelka (1999)
- Release Date: December 16, 1999 (Japan), 2000 (NA & EU)
- Platform: PlayStation
- Summary: Koudelka is the spiritual predecessor to the Shadow Hearts series. Set in 1898, it follows Koudelka Iasant, a young woman with psychic abilities, as she investigates a haunted monastery in Wales. The game blends traditional turn-based RPG mechanics with survival horror elements, making it unique for its eerie atmosphere and dark storytelling. The events in Koudelka set the stage for the future Shadow Hearts games, particularly through its connection to the events and characters that will reappear.

2. Shadow Hearts (2001)
- Release Date: November 15, 2001 (Japan), December 2001 (NA), March 2002 (EU)
- Platform: PlayStation 2
- Summary: The first Shadow Hearts game is set in an alternate version of the early 20th century and follows Yuri Hyuga, a young man with the power to transform into demons. He is drawn into a battle between good and evil after he rescues a girl named Alice, who is being pursued by dark forces. The game’s unique “Judgment Ring” battle system and dark, mature storyline helped it stand out from other JRPGs of the time. Shadow Hearts builds on the gothic and horror elements introduced in Koudelka, and Alice’s connection to the previous game is central to the plot.

3. Shadow Hearts: Covenant (2004)
- Release Date: February 19, 2004 (Japan), September 2004 (NA), March 2005 (EU)
- Platform: PlayStation 2
- Summary: Set during an alternate version of World War I, Covenant is the direct sequel to the first Shadow Hearts. The game continues Yuri Hyuga’s story as he battles against dark forces once again. Covenant improved upon the first game’s battle system with enhancements to the Judgment Ring and introduced new characters, including Karin Koenig, who aids Yuri on his journey. With a mixture of dark humor, gothic aesthetics, and historical events intertwined with fantasy, Covenant is considered one of the high points of the series and an underrated gem in JRPG history.

4. Shadow Hearts: From the New World (2005)
- Release Date: July 28, 2005 (Japan), March 2006 (NA & EU)
- Platform: PlayStation 2
- Summary: The third game in the series is set in an alternate 1920s America and introduces a new cast of characters, moving away from the storylines of Yuri Hyuga and the previous games. The protagonist is Johnny Garland, a young detective who partners with Shania, a Native American woman, on a quest to uncover the truth behind a mysterious demonic force. While maintaining the core gameplay of the Shadow Hearts series, the tone in From the New World is lighter compared to its predecessors, with more emphasis on quirky characters and humorous moments, though it still retains dark themes.

Future of the Series
While there are no official Shadow Hearts sequels after From the New World, the games remain cult classics. There have been fan discussions and hopes for a remaster or continuation of the series, but as of now, no new developments have been made.