Ys: Ancient Ys Vanished Omen

Ys: Ancient Ys Vanished Omen can refer to:

• the PC-88 version
• the FM-7 version
• the FM77AV version
• the Sega Master System version
• the NES version
• the Sharp X1 version
• the Sharp X68000 version
• the Nintendo DS version, sold as Ys I DS alone in Japan initially, then later combined with II for release in Japan and the US