Aside from unlocking some features from select games, Iwata is planning to give amiibo one more purpose in the first half of 2015: unlocking a time-based trial of a NES/SNES game for Wii U owners. For those who don't know which characters that have at least one game from one of the two retro consoles, I'll quickly jot down a list of potential compatible amiibo that are either available or announced:
- Mario
- Peach
- Yoshi
- Link
- Kirby
- Donkey Kong
- Samus
- Marth
- Zelda
- Diddy Kong
- Luigi
- Little Mac
- Pit
- Captain Falcon
- Bowser
- Toon Link
- Mega Man
- King Dedede
- Meta Knight
- Ness
- Wario
- Pac-Man
- Toad
Keep in mind, this list purely came from my speculation.
Source:
http://nintendoeverything.com/nintendo-planning-nes-and-snes-trials-for-amiibo/