Probably Radiant Silvergun.
...which is a very good game, but suffers from way, way too much hype! It's defintely worth a play and a few replays, but it's nothing like as astounding as some people want it to be.
Other rare games I have, or at least games I think are rare
SNES - Japanese Final Fight Guy with mini CD soundtrack
SNES - USA Super Metroid
SNES - USA Earthbound
SNES - USA Secret of Mana
SNES - USA Chrono Trigger
SNES - USA Actraisers
SNES - USA Stunt Race FX
MD - USA McDonald's Treasureland Adventure
MD - USA Phantasy Star III with guide
MegaCD - Japanese Final Fight
NEO GEO - English NAM 75 cartridge
NEO GEO - English Samurai Showdown cartridge
NEO GEO - English Last Resort cartidge
N64 - Japanese Mario Kart/dual coloured controller bundle
PS1 - USA Lunar Silver Star deluxe package
Saturn - All the Japanese Capcom 2D fighters and those with the RAM expansion bundled
Saturn - Japanese Castlevania Symphony of the Night plus soundtrack CD
DC - All the Japanese Capcom 2D fighters
DS - Japanese Electroplankton
...and I'm sure there are others. Thinking about it, I'd hate to calculate the money I've squandered on games alone! Never mind all the Japanese import systems bought at extortionate launch prices...
What's interesting though is most of these so called 'rare' games wouldn't even come close to my top ten ever games (exceptions being Super Metroid, Earthbound, Actraisers). Just goes to show you what nostalgia and being stuck in the past can do for eBay prices! :lol
I think it's time to dump the past and
rip people off make some money!