No.
13. Diablo II - Blizzard Entertainment / Blizzard Entertainment (2000)
Yes, you read right. I have Diablo II on my list of favorite games; in the 13th spot, no less. I don't think the game needs an introduction, but for the benefit of those who have been living under a rock for the past six and a half years, I will write some general information about it.
Diablo II is, in simplest possible terms, a typical hack 'n slash - a game where you run around a fantasy world killing things and collecting phat loot. Sure, there is some kind of a backstory to it all, presented through excellent FMV sequences and involving three Prime Evils (Mephisto, Diablo and Bhaal) that want to take over everything, and the game world is actually fairly varied and interesting, featuring lush rain forests, snowy, mountainous regions, arid lands à la Arabian Nights and even ashen plains of Hell, but core gameplay is simple and involves little but endless combat.
Nonetheless, the game is superbly designed and features surprisingly diverse and challenging gameplay. In Diablo II there are seven distinct character classes: Barbarian (a typical brutish melee warrior, but with warcries adding a layer of tactical depth), Sorceress (a wielder of elemental magic, with an impressive repertoire of offensive and defensive spells), Amazon (a warrior capable of both ranged and melee combat), Paladin (a melee warrior, not as destructive as Barbarian, but having auras which weaken enemies or buff the party), Necromancer (a spellcaster derisively known as "curse bitch", capable of cursing enemies and raising golems and undead minions), Druid (expansion only, a warrior/mage mix capable of turning into a werewolf or werebear, summoning an animal minion and casting elemental spells) and Assassin (expansion only, a melee warrior, but with a plethora of cool abilities, like setting traps). Each class has three separate skill trees containing ten skills/spells - since it's possible to "max out" only a fraction of available skills, building a character takes a lot of meticulous planning. Coupled with solid balancing, this means there are dozens of viable character builds, each requiring a different playing style. It is this great diversity of playing styles, among other things, that sets Diablo II apart from most competing games and makes it a classic that still hasn't been toppled by any of the numerous action RPGs that followed it.
Even with variation in landscape and playing styles, the constant killing everything does get boring and tedious after a while, but that's where multiplayer comes in. Diablo II can be played on Blizzard's official Battle.net servers free of charge alongside thousands of other people (though the number of players per individual game is restricted to eight). Not only is this immensely fun, but it is also the only feasible way to get phat experience and obtain the best items by trading for them. Really l33t people can even play the game in Hardcore mode, in which your precious character gets deleted if you die in battle. Of course, like any multiplayer experience, this one is also marred by grievers, cheaters and complete morons that plague the servers and make you recognize benefits of retroactive birth control. Despite that, Diablo II in multiplayer is possibly the most addictive gaming experience ever and it has consumed many months of my time. I do admit it isn't a very intellectually stimulating experience, so it's understandable why many CRPG snobs detest the game. However, for those of us who don't mind spending a few hours a day doing nothing but hacking up / stabbing / freezing / immolating / cursing demonic hordes, there is no better game than Diablo II. Simply put, it is a classic, and deservedly so.
Plus, it has halberd-wielding cows. Moo!