Well, I don't have many pc-fx games, but anywayz, here's my list :
Blue breaker = avoid, poor 2d action rpg, bad sound.
Sparkling feather = avoid, crappy s-rpg, the worst pc-fx graphics I've seen.
Battle heat = nice intro, bad game. It'll last you ten minutes.
Tengai Makyou = a must get if you're a pc-engine fan. Nice work, Hudson soft !
Zeroigar & Zenki = well, you have those two, but for those who don't, I cannot recommend those games enough.
Der Langrisser : Good rendition of the legendary s-rpg. If you see it, don't hesitate.
Power dolls : Boring ! Boring ! * Yawn *
Far East of Eden Namida : * Wink * *Wink * ; )
I read on a japanese site that Nirgends is THE game to get if you own a pc-fx. If anyone can comment on this...