Ys I & II (???I·II Isu I II) is an action role-playing game compilation released by Hudson Soft and NEC for the PC Engine CD-ROM² in 1989 and TurboGrafx-CD in 1990. It consists of enhanced remakes of the first two Ys games by Nihon Falcom for the PC-8801 home computer in Japan. It was released as Ys Book I & II for the TurboGrafx-CD in North America in 1990 and was a pack-in title for the TurboDuo in 1992. Ys I & II was released on the Virtual Console in Japan in October 2007 and worldwide the following year.