Not a big fan of calling games overrated since I'll admit it's all based on opinion and perspective. The way I see it, when I call something overrated, I mean to say it was a game that I didn't really care for, but ended up being popular, or won awards etc. I don't mean to suggest that people who like said games are wrong, dumb, sheeple etc.
That being said, here are just a few I found meh, that many people found to be excellent.
Definitely Last of Us. The reasons? The story was rather predictable, it even used the "genetic chosen one" trope. Plus being yet another zombie game makes me roll my eyes. I found many of the characters unlikeable despite the game trying desperately to make me like them. Ellie in particular, I honestly would not have minded letting her get sacrificed for the cure in the end. Joel wasn't much better, I would have rather seen them both get their comeuppance considering they did some awful stuff too. Gameplay wasn't bad, but it didn't really click me, but I can see why people would enjoy the stealthy conserve ammo approach.
Super Mario 3D World. Now I liked the game, but honestly it wasn't one of the best games of 2013, especially when you compared it to other Nintendo games. I thought Link Between Worlds, Pokemon X and Y, Fire Emblem Awakening, and Pikmin 3 deserved more praise. Yet it was touted as one of the best games of the year, at least by critics when awards season rolled around.