GREAT SCOTT!!! This game is AWESOME!!!

Made by the folks who did Minecraft Story Mode, this Back to the Future game is awesome! Some of the original actors lend their voices to this game. And for those who weren't in the original movies, you really can't tell. The guy who does young Marty just hits it out of the ballpark!!! Meanwhile, Michael J. Fox does have a few cameos.
If you love the original movies, you're really going to enjoy this game. There's never going to be a Back to the Future Part IV - but this game (for all intents and purposes) is the next best thing. It is very true to the original story lines while moving forward with it's own original story lines starting in 1986 - about a year after Marty returns at the end of Part III.
Some of the game play requires you to think and pay attention to detail. And, if you get stuck, there are always good hints you can access.
I'd say it's a good one for the entire family. It's rated T for Teen: probably because of a handful of PG words....such as "If my calculations are correct, when this baby hits 88 miles per hour... you're gonna see some serious sh**!" and a few others. Also, there is a lot of thought process required to make it through each episode.
It shouldn't be a problem playing this with the family watching. If it were a movie, I'd say it would be a PG or a very light PG-13.
I really hope Telltale is able to make a Part 2 (additional episodes) of this game. When you reach the end of the game, there seems to be a familiar clue that they just might.