Players take on the role of Logan's brother, working to increase his own strength and powers, and eventually build an army to overthrow his brother and take over the reigns of Albion. The game features a focused main storyline broken up by generous numbers of quests, the ability to work jobs, own real-estate, and get married remains. Players may choose to be good or evil, and their decisions in the game reflect on changes in the environment and on other characters. Weapons can also be changed according to how players progress through the adventure.
A new element is that players must build an army to overthrow Logan by "playing politics" with the citizens of Albion, which may involve making promises and keeping them once the player has taken over the kingdom.
Fable III also contains an online multiplayer mode, somewhat more fleshed out than in Fable II . Players can interact and quest with one another on a more equal status. The Windows version of the game features an additional difficulty level called "Hardcore Mode".