Fallout 3 is an open-world action role-playing game developed by Bethesda Game Studios and published by Bethesda Softworks. Set in the post-apocalyptic Capital Wasteland around Washington, D.C., players leave Vault 101 in search of their missing father. The game features open exploration, moral choice-driven quests, and the tactical V.A.T.S. combat system. With branching storylines, faction interactions, and expansive environments, Fallout 3 redefined the modern RPG experience on PC.