For a mainstream magazine, I really think Time Magazine does a good job with its end of year top 10 list. It's personal, unique and it feels genuine and authentic. I don't think I could disagree more with Time Magazine list for 2012, but at the same time I sort of respect the fact that it exists!
1. Guild Wars 2 2. Xenoblade Chronicles 3. XCOM: Enemy Unknown 4. Dishonored 5. Assassin's Creed III 6. Papo & Yo 7. The Last Story 8. LittleBigPlanet 9. Halo 4 10. Torchlight 2
You can head here for a more in-depth look at the list, including the reasons why each game was included. I do have to note the omission of games such as Journey and The Walking Dead -- mainly because I expect those games to clog up a majority of lists this year but, besides that, I have to congratulate Time on putting together such an idiosyncratic list.