What's the rarest videogame(s)/console(s) you own

[forest-spirit]

My European copy of Terranigma(SNES) is my rarest game, followed by Valkyrie Profile (PSX). I used to have Zelda: Link to the Past with the big box which included a guide, but I sold that together with most of my SNES stuff back in the days. (Mistake of my life...)