Best Open-World Games

[Psychotic]

Fallout: New Vegas - Is not only full on content, it's full of content that matters. Each character, quest, and locale is tied to the greater setting and plot, making each element of the game feel connected. Moral ambiguity, a variety of solutions to quests, and a faction/reputation system that puts the World in Open World.

Absolutely.

red dead redemption

Definitely.

Also Saints Row 2 is a masterpiece and by far and away the best sandbox crime city game.

Finally, the Assassin's Creed series gets a lot of trout and deservedly so in many cases, but their recreations of cities are beautiful and densely packed - there's always something going on.