Ys I
- Ys: Ancient Ys Vanished Omen / Ancient Land of Ys / Ys: The Vanished Omens (1987)
JP: X1, PC-9801, FM-7/77, FM-77AV, MSX2, X68000, FC, MS-DOS, Apple IIGS, Sega Saturn
US/PAL: Master System
Ys II
- Ys II: Ancient Ys Vanished – The Final Chapter (1988)
JP: NEC PC-8801, NEC PC-9801, X1turbo, FM-77AV, MSX2, NES, TurboGrafx-CD, MS-DOS, Microsoft Windows, Sega Saturn
Ys I&II
- Ys I & II / Ys Book I & II
JP: PC Engine, Wii
US: TurboGrafx-CD, Wii
PAL: Wii
- Ys Eternal (1997)
JP: Windows
- Ys I & II Complete (2001)
JP: Windows
- Ys I & II: Eternal Story (2003)
JP: PS2
- Legacy of Ys: Books I & II (2009)
JP/US: Nintendo DS
- Ys I & II Chronicles (2009)
JP/US: PSP, Windows
PAL: Windows
Ys III
- Ys III: Wanderers from Ys (1989)
JP: NEC PC-8801, NEC PC-9801, MSX2, Famicom, SFC, MD, PCE, PlayStation 2
US: SNES, Genesis, TurboGrafx-CD
- Ys: The Oath in Felghana (2005)
JP/US/PAL: Windows, PSP
Ys IV
- Ys IV: Mask of the Sun (1993)
JP: SFC
Fan translation
- Ys IV: Mask of the Sun - A New Theory (2005)
JP: PS2
- Ys IV: The Dawn of Ys (1993)
JP: PCE
Fan translation
- Ys: Memories of Celceta (2012)
JP/US/PAL: Playstation Vita
China: Windows
Ys V
- Ys V: Lost Kefin, Kingdom of Sand (1995)
JP: SFC
Fan translation
- Ys V Expert (1996)
JP: SFC
- Ys V: Lost Kefin, Kingdom of Sand (2006)
JP: PS2
Ys VI
- Ys: The Ark of Napishtim (2003)
JP/US/PAL: Windows, PS2, PSP
Ys VII
- Ys Seven (2010)
JP/US/PAL: PSP
China: Windows
Ys VIII
- Ys VIII: Lacrimosa of Dana
angekündigt
Spinoffs:
- Ys Origin (2006)
JP/US/PAL: Windows
- Ys Strategy (2006)
JP/PAL: Nintendo DS
- Ys vs. Sora no Kiseki: Alternative Saga (2010)
JP: PSP