[۲], IGN attended PlayStation's third anniversary party in Las Vegas on September 9, 1998 which also served as the game's launch party. (Source: An article from September 10, 1998 claiming that the party was "yesterday.")
[۳], There's also an IGN article posted on September 9, 1998 which claimed that "Spyro the Dragon ships today."
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[۴], Lastly, despite listing September 10, 1998 as the game's release date, Insomniac admitted that they are unsure about it, and are only using it internally.
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[۱], Insomniac Games conducted a live chat session dated September 11, 1998 on which they claimed that the game was released "two days ago."