In Fallout 3 quests are made up of the main quest, which takes you along the central storyline of the game and your character, and side quests, which find you interacting with multiple citizens of the Fallout 3 world and completing assorted tasks.

Fallout 3s main quest follows the central storyline of Fallout 3 and its protagonist, your player character. Having grown up in a nuclear fallout shelter referred to as a Vault, one day your father unexpectedly abandons your family and leaves the Vault. You then have to escape Vault 101 and enter the wastelands of the outside world to find your father and find out why he left. The main quest takes you through childhood and into adulthood, and eventually to all corners of the Fallout 3 world. It takes roughly 20 hours to complete or less.