"An independent video game (commonly referred to as an indie game) is a video game that is created without the financial support of a publisher"
i'm 100% sure they had financial support from Sony so they would allow them to Publish their game for them.. hence not an indie game
But it's also clearly not a AAA game, but the game is overpriced for what it have to offer, which seems to be the problem, bad marketing and bad pricing lead people to believe it was a AAA game when it's so clearly not.