Fallout 4 is an open world action role-playing video game developed by Bethesda Game Studios and published by Bethesda Softworks. The fifth major installment in the Fallout series, the game was released worldwide on November 10, 2015 for Microsoft Windows, PlayStation 4, and Xbox One. Fallout 4 is set in a post-apocalyptic Boston in the year 2287, 210 years after a devastating nuclear war, in which the player character emerges from an underground bunker known as a Vault. Gameplay is similar to Fallout 3. The player completes various quests and acquires experience points to level up their character. With first- and third-person perspectives available, players can explore Fallout 4 's open world setting at will, allowing nonlinear gameplay. Companions can accompany the player on their voyages to assist them in battles and help with scavenging. Players have the ability to construct and deconstruct buildings and items, and use them to build a settlement, which can attract and be inhabited by non-playable characters.