Fallout 3, developed by Bethesda and released in 2008, takes place in a post-apocalyptic world devastated by nuclear war. Players take on the role of the Lone Wanderer, a survivor from Vault 101, as they explore the wasteland of Washington D.C. The game is known for its dark humor, moral choices, and immersive open world, where players must scavenge for resources, fight enemies, and navigate complex political factions.

Fallout 3 was a critical and commercial success, bringing the Fallout franchise into the modern era with its 3D graphics and expansive world. The game introduced players to a wide variety of characters, quests, and locations, allowing them to shape their own stories in the harsh wasteland. Its influence can still be felt in many modern open-world RPGs, particularly those that emphasize player choice and consequence.