Heh, coming back from lunch I’d like to elaborate on a number of things.
First off, hack-and-slash was never really my thing, but I’ve heard good stuff about Dungeon Runners. Guild Wars is also basically free and is more well-regarded, though.
NC-Soft however is a publisher, with no internal development studios AFAIK. They are generally a very hands-off publisher at that, and are mostly interested in capitalizing on the MMO market by getting a piece of as many different pies as they can. It’s something of a fallacy to really equate any of their games.
For instance, Lineage 2 is a full-scale MMO that trades heavily on it’s graphics, looks-ism (hey! we’ve got fetish-istic female player characters!), and being entirely gank-errific (completely unrestrained PVP).Lineage 2 is developed in Japan, IIRC.
CoH has almost no PVP at all (only voluntary dueling, and a handful of faction-based PVP-specific zones), and has one of the most open, friendly, and generally helpful player communities I’ve ever seen in a successfull MMO. CoH and CoVillains are developed in the USA.
Both are published by NC Soft.
As for WoW, it is, put simply, a formulaic full-scale MMO in the tradition of EQ, except it’s executed with a level of polish and player-friendly practicality that easily explain why it’s the creme of the crop. It’s got all the addictive tendencies of social interaction in a perpetual virtual world, with very little BS going on. There’s little grind (you can solo any class from lv 1-70, the current cap, it just takes more time for support-oriented classes), PVP is well-regulated (it’s faction-based, so even on PVP servers only opposing-faction player-characters can fight you, and besides the aforementioned flagging system, automatic flaggin only happens on border-territories and the “battlegrounds”), there’s no looting or stealing of player-owned items (!), you can’t lose ingredients on a failed crafting attempt, everything about gameplay mechanics is explicitly stated and quest-text usually is very clear, etc., etc., etc.
Additionally, the entire visual style is characterized by Blizzard’s distinct art-team look, and has a general “less-is-more” approach that gives it startingly impressive visuals, while having very basic system requirements. You can run mid-level graphics settings on very old machines and actually get a decent frame-rate. The game is PC and Mac compatible out of the same box, too. This is something Blizzard is known for, and the ease of accessibility of their titles has long been a big help in their success.
It’s very much how I would characerize their company; Not terribly original, but very practical and user-friendly, able to take other people’s ideas and execute them with an unprecented level of quality. Oh, and as masters of self-promotion and hype.
The Warcraft tie-in comes from the fact that over the decade or so that they went from Warcraft to Warcraft 3 expansion (along with various tie-in novels, a tabletop RPG, etc.) they built up a fairly extensive lore and fictional world. WoW is set in that universe and has built extensively on it.