While you could explore small parts of these games it wasn't really the major aspect of them: Baldurs Gate, Baldurs Gate 2, Fallout 1, Fallout 2, Torment, Deus Ex, Alpha Protocol, Fable, Mass Effect 1/2, Dragon Age Origins,
Sooooo....
The games that were RPG and did have heavy exploration on them: Oblivion, Morrowind, probably Arena and Daggerfall (haven't played them), Fallout 3, New Vegas, Blue Dragon.
So erm, yeah, I wouldn't say that exploration is a must of an RPG, it's more like a bonus or a taste in design.
Then there are action/adventure games with RPG mechanics that had focus on exploration, but I don't consider these real RPG's: Diablo, Diablo II, Borderlands, Dead Rising, Dead Rising 2.
It's MORE of a game WITH exploration than without it, anyway....
GameSpot -- Best PC Game--
Best RPGGameSpot gave it the
Best Role-Playing Game of E3 2007 award.
IGN --
Best overall RPG 2008
Game Critics Awards gave the game
Best Role-Playing Game and Best of Show for E3 2008
At the 2009 Game Developer's Choice Awards, it won overall Game of the Year along with Best Writing
PC Gamer gave Fallout 3
2nd place on its
'100 Best PC games of all time' list, praising its user-modifications, deep gameplay and overall polish
At the end of 2009, Fallout 3 was featured in IGN's Best Video and Computer Games of the Decade (2000–2009), with the game being placed top game of 2008 and 7th overall game of the decade.
That's 2007, 8, 9. just a selection of awards.
Bethesda made a far better sequel in Fallout 3, there is no doubt of that. Continuation of Fallout 3 should be Fallout 4 not the spin-off New Vegas.