1. The Wolf Among Us
You might be surprised why this game is on the list because it's from Telltale. However, I've noticed that The Wolf Among Us didn't receive much buzz as The Walking Dead. Maybe it's because the latter has a wide audience reach with a comic and television fan base. It's basically part of mainstream culture now.
On the other hand, the former is only known in the realm of comics since it made us Bill Willingham's comic Fables. The main premise involves fairy and folk tale characters displaced in our world. It's not so campy and cheesy like what ABC did Once Upon a Time. It's gritty and well worth your time.