There's still a bunch of games coming out this year that can compete for game of the year like: Far Cry 4, Smash Bros Wii U, Master Chief Collection, Grand Theft Auto V (Remastered XP), and Assassins Creed.
Even though I think Destiny will be the best to second best selling game this year its metascore will probably be mid 80's so I don't think it will get game of the year.
Survivor Millennial vs Gen X!!