Game demos are awesome, but they're usually the intro section of any given game. More than that, once you actually have the retail version, you're stuck working through the same portion of the game over again before getting to the meat of the experience. Playing early is a double-edged sword. NBA 2K17 is doing something different come September 9th, though. With "The Prelude," you'll have early access to the basketball game's career mode and will be able to play college games, interact with coaches during the mini-narrative and affect how you'll start MyCareer when the game arrives.