On how many games should an amiibo be compatible to be worth purchasing?

[Cloudman]

Hmm, are we talking about the games or amiibo themselves? If we're talking about games that have amiibo usage on them, I would say the majority of them, since most of them are already great games on their own, and amiibo are not needed to enjoy them. Only one I can think of is Mario Party 10, amiibo or no, that game doesn't seem very good. Amiibo Fest I would def say is not for everyone either.