iippo: Best lore of "game"?
Well if not limited to computer games, then deffo:
-The old original Warhammer Fantasy Roleplaying Old world.
-Cyberpunk 2020
-Shadowrun
-Heimot roolipeli (scifi roleplaying, in finnish only I am afraid)
-Praedor (Fantasy PnP ,in finnish only)
If computer, well I dont think they generally compare to PnP worlds.
Jade Empire, Fallout, Deus ex, Mass Effect (ive played 1 and 2), Arcanum, Dark Souls (minimalist, but still), Ultima, Dead Space (as world, it would make nice horror set), Half-Life and Portal. Freespace and Independence War and pretty intresting set ups as well.
Well, with time I could undoubtedly rememeber more proper rpgs with big worlds, but in general different game worlds and lores interest me for different reasons. Some because they are so huge and detailed - others because they are so vague and mysterious, that you can only open them ever so slowly.
Jade Empire's world was quite epic, but I am afraid they are not going to be making more of that any time soon. Great game.
Even though jade empire was a very cool game it didn't sell as much as 1568th game with elves and dwarves and it also didn't have massive advertising campaign as mass effect so it's very unfortunate that it probably won't have a sequel because of low sales and players who refuse to play anything looking at least a bit different.