The Elder Scrolls 3: Morrowind is an PC/Xbox RPG game originally released in 2002, developed by Bethesda Software.
The game takes place on the island of Vvardenfell, home of the Dark Elf race. The game features a massive landscape that is fully explorable and a system for leveling that allows you to shape your character to be exactly how you want them to be, be it a mage, assassin, barbarian, or anything in between (or even all at once).
There is a truly massive amount of quests and things to discover in this game, including a rather long main quest (that you can completely ignore if you wish), ten faction quest lines for all the major organizations such as the Fighters Guild, Mages Guild, the Imperial cult, and finally the Morag Tong, a group of deadly assassins. In addition to these there are also dozens of side quests for you to do, everything from picking flowers to slaying the servants of a god.
This game is part of the ongoing Elder Scrolls series and has 2 expansion packs, Tribunal and Bloodmoon. The first of these expansion packs adds the massive city of Mournhold to the game along with a new quest line and many side quests. The second expansion, Bloodmoon, adds the northern island of Solstheim to the world, containing yet another quest line and many side quests. This expansion also added the ability to become a werewolf.
The Story begins with your arrival in Vvardenfell as a prisoner with no background, who has been released under mysterious circumstances. Over the course of the main quest you will slowly discover your role in the future of Vvardenfell, and that to save it, you must achieve the impossible: you must kill a god.
In your quest, you will be required to make alliances with many factions and retrieve three key artefacts that are required in order to slay a god. However, none of this will help you if you should fall to the god's many minions, or the withering blight that spreads out across the land, killing everything it touches.
There has been a massive amount of additional content created by some very talented modders for this game, including completely new quest lines, cities, islands, monsters, armor, weapons, increased graphics quality, bug fixes and minor gameplay tweaks.
For people new to the game the sheer amount of mods for Morrowind can be somewhat daunting, so it might be a good idea to play the game for awhile to get a general idea of what you are looking for. In the links section below are some good places to find mods.