Used amiibo can be used without issue.
There’s options in the settings to erase game data from the amiibo or even just wipe everything that can be wiped.
What do you do with Amiibos?
What can amiibo do?
- Add a character to the game. Code Name S.T.E.A.M.
- Get bonuses or special items. Mario Kart 8.
- Level up or customize your character. Super Smash Bros. for Wii U.
- Unlock new adventures. Splatoon.
Can you use Amiibo cards without the reader?
1 Answer. Amiibo Cards work the same was as regular Amiibo figurines, in that they require a special reader/writer. Meaning, if you don’t have the new Nintendo 3DS that comes with this reader/writer built-in, you will need to buy the NFC adapter that you’ve mentioned.
What does resetting an Amiibo do?
Important: Resetting amiibo data will delete both game data and user/nickname data. If you don’t want to lose the user/nickname data, then you may find our information on deleting game data helpful.
Are Amiibos discontinued?
Nintendo: Yes, We’re Discontinuing Some Amiibo Figures. After the November 21 launch of Amiibo, Nintendo’s line of Skylanders-style interactive figurines that connect to Wii U games including Super Smash Bros.
Are Amiibos worth it?
If you only focus on the games/characters you like, then yes. It’s worth it if it brings you joy to have and display them. For the foreseeable future it looks like Nintendo will continue supporting in-game amiibo functionality, but honestly, the in-game amiibo bonuses aren’t that great.