For Fallout: New Vegas, a new HUGE mod, years in the works, has dropped an opening Cinematic. The Mod crew has said that they should be announcing at the end of the month the full release date. Set as a prequel to the story of New Vegas, this is the story of California. Including 18,000 lines of dialog, a massive storyline with 18 different endings, this is a Mod that rivals the size of New Vegas. Hats off to the incredibly active Mod community without which Bethesda wouldn't be making half as much money as they do...no hoping that Bethesda doesn't kill the goose that laid the golden eggs for them.
I don't know. There are some farking huge mods out there. Some of them go way beyond mod and should be thought of as full add-ons to the game, or even, game expansions. Calling them a mod seems so...lacking.