I don't think I'm qualified to vote. Of the three games I've played, two are massively overrated (in my opinion), The third one (Journey) is great, but the game of the decade? No, just no. I would probably vote for The Witcher III or Breath of the Wild, but I haven't played either of them (yet!), so that wouldn't be the greatest thing to do. I'll reserve judgement until I've played more of the candidates.