Is ys seven a good lead up to this haven't played a ys game since ark on psp and missed out on a couple apparently and they are on sale I think on psn for real cheap. Worth it?
All of the Ys games on PSP are both amazing an unique. Chronicles is a remake of Ys 1 and 2, with gorgeous sprite graphics, and expanded, classic bump based gameplay. I love them to death but some consider the game a bit archaic. I think the updates modernized them quite a bit, but these are still based on versions that came out in 2000, so there is that.
Oath in Felghana is the best Ys game ever made, probably the best Action RPG ever made. Unlike Ark, which has the same engine, it was actually ported to PSP by Falcom and plays and looks pretty much perfect. It's much faster than Ark, with much better level designs. Also has THE best soundtrack in series history. And that is saying something.
Ys Seven, which is closest to Celceta in gameplay, mixes Ys action with a party based JRPG, and it works really, really well. The world is much bigger than any other Ys game, (save Celceta) and the story is more involved too. The different party members really change up the gameplay, but at its core it still FEELS like Ys, which is damned impressive for such a massive change from what had until then been a single character action RPG series.
So if you want one that is close to Memories of Celceta, Seven is probably your best bet. But the other games on PSN are well, well worth it. Buy all three!!