One of the cooler perks of the Last of Us season pass was access to the 90-minute documentary, Grounded. For those of us who were too cheap to purchase the season pass, or that had our PlayStation 3 fried by a lighting strike a week after finishing the game, the documentary is now available for free on Amazon Instant Video.

Filmed by Area 5, the same group behind the recent Outerlands kickstarter and the old 1up Show, Grounded is a behind-the-scenes look at the development process and philosophy that went into making one of our favorite games from 2013.

You have to have an Amazon Prime subscription to access it, but if you do, it's well worth the 90 minutes it takes to watch it.