I’ve got a few gems in my collection and trying to gauge rarity is a bit tricky as what I think is rare may be uncommon or the second hand game shops in your area is flooded with them.  On top of that you have to decide for yourself if I’m telling the truth or pulling your leg with a wild exaggeration.

I would say then that the one game I can really say is rare is Dune: Chronicles of the Imperium a limited print run of 2000 copies; most of which sold at GenCon, a few made it to the UK and a friend snapped his one up at GenCon UK.  My local games shop Leisure Games had brought a couple back from the US and that’s how I got my copy.