Lets see here.

Lunar 1
Lunar 2
Tales of Eternia(PSX)
Valkyrie Profile
Rez
Gitaroo Man
Castlevania Chronicles

I probably have other rare games and just don't know it. I have the greatest hits version of Castlevania Symphony of the Night. I heard that game was rare from some people and I go "It was a greatest hits...how is it rare?"