The functions of Amiibo (Amiibos? Whatever the plural ?!) differ from game to game. I personally own at present only 2 compatible games and would therefore deal only with the functions in these two titles. In Hyrule Warriors of Link Amiibo serves to unlock the slide from TP as a weapon for the link, the further it is possible to connect the Amiibo once a day with the game for "gifts" to obtain. So more rubies, or other useful materials are obtained, for example, while playing. In SSB4 the Amiibo appears as Computer-controlled fighters, you can train and equip according to his ways. Thus, even the same Amiibo (eg 2 times Link) be clearly distinguishable from the other player. By fighting the Amiibo learns how to react successfully to actions of the opponent. There is of course the possibility to let the Amiibo fight against the computer to level up it, but in my opinion this is the fun bit lost. For me it was a certain feeling to train my Pokemon Link ^^. Due to the yellow support columns of the link Amiibo is certainly not the most beautiful of all figures, but this is all a matter of taste. To me he gefälllt very good in any case and would have even without his DLC feature a place on the shelf :). Because we have once Amiibo are honest to as games to expand what we think of it is entirely up to you, but I like a figure better than purely electronic content for the same price.