3) Titanfall 2
The first Titanfall game took a lot of us by surprise, sending a breath of fresh air into the FPS genre and offering up a solid alternative to the Battlefields of Duty. For a new IP, the first Titanfall game did really well, and left people hungry for a sequel where some of the little problems would be fixed, and all sorts of great new things would be added.
That’s not quite how it panned out, as Titanfall 2 did very poorly in sales, being overshadowed by Battlefield and Call of Duty. Additionally, a fairly standard art style could have put some consumers off, along with a lackluster marketing push by EA.