http://www.digitpress.com/
That site has a rarity guide that I find pretty useful. It uses a 0-10 scale, 10 being the rarest(like a prototype).
@Rock_on: ET is anything but rare. Despite the many unsold copies we hear so much about, there were still millions of copies sold.
@Rubang: According to digitpress, Action 52 is a rarity of 7. So yeah, that baby is pretty rare indeed.
Going by digitpress' guide, here are my rarest with how rare they are in parenthesis...
Mighty Final Fight-NES(5)
Final Fight 3-SNES(4)
Ninja Gaiden Trilogy-SNES(4)
Robotron 64-N64(4)
Shinobi III-GEN(4)
TMNT: The Hyperstone Heist-GEN(4)
They haven't really updated their Game Cube section of the guide, but I imagine that Cubivore is quite rare in America.
"I feel like I could take on the whole Empire myself."
