Kuon (PS2)

Kuon (2004) by FromSoftware is widely regarded as the rarest PlayStation 2 game ever released in PAL territories. This Japanese horror title set during the Heian period received an extremely limited European print run and has become the ultimate PS2 collector's grail. Complete PAL copies with manual regularly sell for EUR 400-600, with sealed editions reaching well into four figures. Its connection to FromSoftware (pre-Dark Souls) adds to the mystique.