Figurine made by Nintendo with the effigy of many characters of video games. Each of the minifigures contains an NFC chip under its base, which allows it to interact with certain video games to unlock content, or save data.
Each of the figurines costs about 25 CAD taxes included, and since 2014, more than 200 of them have been released individually for the vast majority. It is difficult to obtain each of them because Nintendo produces less than the demand. Some have therefore become expensive.
They are compatible with 3DS, Wii U, and Nintendo Switch consoles.
Then you need a game that is compatible with some of them.
Example: The game “Zelda Breath” of the Wild compatible with all amiibos, but gives more bonuses if it is an amiibo from the Zelda series that is used.
