So it's widely known as a fact that many Nintendo games have ridiculous legs. But here's the question that no one really bother to ask...why is this so?

[Kaizar]

Otakumegane said:

 What gives Nintendo games such massively drawn out sales periods and 8year long shelf lives?

And why are certain Nintendo franchises absent from these patterns? (Zelda,Fire Emblem)

Actually, Fire Embelm: Awakeing has a 8 year long shelf life.

But I don't think Zelda ever will.