靈封封夢怪
封封夢幻怪
靈封夢幻怪

ReiFuuFuuYumeKai
FuuFuuYumeGenKai
ReiFuuYumeGenKai
From the Japanese titles of the first five games (Reiiden, Fuumaroku, Yumejikuu, Gensoukyou, Kaikidan).