Read-only feature:

Unlock a Reserve Tank depending on the amiibo / After beating the game: Unlock a gallery, Sound Test or Fusion mode depending on the amiibo

Scan these amiibo to unlock a Reserve Tank for the rest of the save file (each refills after use):
- Samus Aran (Samus Returns): Aeion Reserve Tank (refills the Aeion gauge when empty)
- Zero Suit Samus: Energy Reserve Tank (restores health when empty)
- Any other Samus amiibo (Smash Bros. and others): Missile Reserve Tank (replenishes missiles when empty)

After beating the game, scan them again to unlock these bonuses:
- Samus Aran (Samus Returns): Metroid II art gallery
- Zero Suit Samus: Sound Test
- Any other Samus amiibo (Smash Bros. and others): Concept art gallery
- Metroid: Fusion difficulty mode, played in the Fusion Suit

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Read-only feature:

Mark the nearest Metroid on the map

Marks one Metroid at a time; scan again after defeating it to mark the next.

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