It's no surprise that aside from PvP'ing, another leading cause of game addictions in the World of Warcraft are the quests. Literally numbering in the hundreds, WoW's game quests are the player's bread-and-butter - giving them plenty of ways to kill time, level up, and get much-needed gear as they progress.

But aside from the traditional "kill 65,340,285 Boars" sort of grind-fests we're familiar with, there's also the sort of quests that leave us enjoying every minute of the trip - the sort that leave us appreciating the 3 hours or so we spent trying to get it right.

That's the topic of a recent thread over at the WoW Europe forums, as Edition discussed the Cortello's Riddle quest. What made this quest unique and memorable, according to Edition, was that it challenged players to solve a riddle, as compared to WoW's traditional fare of mob hunts, or escort missions.

Other interesting quests mentioned by the forum members:

• "The marmot quest! I haven't even done it yet (only seen it done) because I save it for a special moment." - Ommra
• "Quest chain which starts from Learning the Language in Draenei starting area is quite cool and fun. Also The Kessel Run and Tree's Company are quite fun too." - Elyssa
• " Nothing beats the hellfire flying bombing and the exorcist quests, i was all fired up for TBC after seeing them as starters, then we get dumped back with nessingwarys dull-a-thon." - Smitey