With the circumstances around it's development, I think Majora's Mask is the

Board 8

KingButz posted...
Nobody ever made an indie game before cave story, sorry shareware devs

OK 'Pioneered' was the wrong word, but Cave Story popularised and set the standards for indies and one-person games that followed, I think it's worth a mention given the criteria. But yeah this is irrelevant because:

Xiahou Shake posted...
Majora's Mask is in the running for best game ever with no qualifiers or additional considerations.
Slowly becoming a Final Fantasy aficionado.
Currently playing: Xenoblade Chronicles!