amiibo-compatible game
Wii U
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Read+Write feature:
Before the March 2017 update, the Shovel Knight amiibo was also required to unlock co-op mode.
King Knight
Shovel Knight series
Plague Knight
Shovel Knight
Shovel Knight - Gold Edition
…as Shovel Knight
Specter Knight
Read-only feature:
Added in the March 2017 update.
Source: Yacht Club Games blog