I'm looking for a "good" open world rpg here on gog.com. I recently got Two Worlds when it was on sale this week and It's pretty good so far. But, it's never too early to start thinking about what's next in line.

I'm thinking something in the line of an Elder Scrolls game such as Morrowind.

So, any recommendations?

Not an RPG, but you might want to give Outcast a try. Excellent game and atmosphere.

I think Arcanum and Fallout 2 are obvious choices. The Gothic games are pretty big with a lot of random stuff to do, as well.

Get the first Witcher!

Sacred?

Gothic series

If you don't mind going back a bit more, Ultima 6 and Ultima 7 both fit the bill. (The freebie Savage Empire and Martian Dreams are a little more focused, but you can't beat the price.)

Betrayal at Krondor might also qualify, since within each chapter you can pretty much wander as you please.

Great game, make no mistake.. however not really a good example of open world RPG; the zone design is very, very linear

Your best option would be Sacred. It is actually referred to by some as the "Hack'n Slash Morrowind". Other fine choices would be:

-Arx Fatalis
-Gothic 1&2
-Fallout 1&2
-Outcast(Not an RPG, but still good)
-Soul Reaver(again, not an RPG, but it is open world)
- Darklands( a little older, but still good)

I love TES series. However, I'll put one that no one has mention.......
That is.......Might & Magic 1~6
M&M 4+5 and M&M 6 are respectively the best older (1~5) and newer (6~9) M&M games, and they are both open world rpg.

Remember "the faery tales adventures", and its top-down open world of exploration ? It was a favorite of mine, on the Amiga, something I always missed, and couldn't find in diablo-likes or ad&d crpgs.

Well, I am now playing Divine Divinity, and that is that. Feels like a modern Faery Tale remake, or Faery Tale itself. I get the same feel from it, long afterwards. A big world, free to explore in any direction, filled with monsters but not in an artificial crawl-through-hordes way, and a population that feels more real than mere quest givers planted there.

I agree about the Gothic games, they are roughly as good as the Elder Scroll. I agree with Fallouts, Arcanum, etc. I also agree with Arx Fatalis, which is strangely open-world despite of being made of underground corridors. I don't agree with Sacred. Sacred is a multi-directionnal Space Invaders, a Diablo with no sense of actually exploring a world (it's more about cleaning up a world, or regions, the same way you clean up screens after screens of enemies in other shooters. If you want a top-down exploration rpg, go Divinity. I can't believe I've overlooked that game so much and for so long.

It deserves to be suggested more often.