As you are probably aware, this year's VGA (Video Game Awards) crowned Half-Life 2 as the Game of the Decade. I disagree, and I will give my opinion about why.
Personally, I believe something as big as "Game Of the Decade" has some meaning behind it. It kind of makes you think "most influential" in some way, doesn't it ? To me, if you start talking about the whole decade, I will have thoughts going towards what had the biggest impact in gaming. In that sense, I do not believe anything else comes close to World of Warcraft.
Do you remember the first time you played ? Starting in Elwynn Forest, Dun Morogh, Teldrassil, Durotar or Tirisfal Glades. That first feeling of, this... this is just amazing. Then your first instance. Deadmines for many of us. Your time spent with guildies or friends, leveling all up to 60. The mount quests for Paladins and Warlock. The AQ event. Molten Core, Blackwing Lair. How can you compare HL2 to those ?
I am not saying HL2 did not have an impact on the gaming industry, quite the opposite. Half-Life in itself is one of the most influential games of all-time. I would say though that HL1 had more of an impact than HL2. Still, I will give HL2 credit for making Steam the powerhouse it is today, and the Source engine bringing us games like TF2, Portal, L4D, CS:GO and many others. It also brought physics to an unprecedented level, and to this day, probably the most anticipated game of all-time is Half-Life 3. Just the thought of Valve announcing HL3 boggles my mind.
But World of Warcraft ? I mean, seriously ? How can this NOT be the biggest game of the decade ? Your mom probably knows what WoW is at this point ! It has had millions of players for over 8 years, and doesn't show any signs of slowing down. HL2 for all we know, is dead. Episode 3 hasn't been in the news lately...
The raids, the community, the music, the zones, the quests, the times you spent with your guilds, the PvP. All of those, for me, make WoW the undeniable Game of the Decade. Remember, deep in your thoughts you know it. Remember.