I prefer the TurboGrafx CD Version of Ys I but this was still great. Save for Dark Fact on Nightmare. Unlike the remake of Ys 1, I think Nightmare difficulty actually improves Ys II from a gameplay standpoint. I enjoyed bosses in the TurboGrafx-CD version of Ys 1, meanwhile I steamrolled in Ys II. The higher difficulty options in this version make a lot of fights in the first game far more frustrating than they need to be whereas in the second they actually provide a fun challenge. Would recommend anyone who wasn't too hot on an older version/lower difficulty of Ys II to give Nightmare a shot.