[Lawtan]

Well...
1 part coding
1 part storytelling/writing
1 part messing with basic 3D models
1 part scripting
1 part artistic design/layout
1 part linking it all together
1 part help from other public works
1 part music/ambiance
...

I was trying to make a multiplayer world where my DM was a demigod whose mind was messed up due to guilt/life/etc...and was turning from a benevolent maintainer of balance and freedom into a tyrant...and you had to travel through the memories and the mind to free him...or assemble a coalition of other races to fight and end his reign, ending the "Sanctuary" and "Atlantis"

...It also had forest haunted by vampiric ghouls, a city where the backalleys were like Vampire: The Masquerade/gangs, rolling fields with caves linked to werewolf packs (transformations from human to wolf or vampire bat or the hybrids), a war between 2 villages, a job system for farmers, artisans, and heroes, a museum paying homage to AdventureQuest, NWN, and Monty Python, a piracy/sailing mission set, a "halloween event cavern" a Parlimentary system, a castle sort of showing what I like, puzzle systems, riddles, astrology, and likely several things I am forgetting...
...I was trying to make this when I was 14...