Culture is the Aspect of the kingdom that represents its citizen's devotion towards the arts and belief in The Watcher.
Citizens of a kingdom with a high Culture value can praise the Watcher in conversations and donate to charities (this results in the Watcher's Charity buff), even if they're not normally Good.
Citizens of a kingdom with a neutral Culture value don't feel especially cultured or uncultured.
Citizens of a kingdom with a low Culture value occasionally feel unsophisticated, making them unfocused for awhile.
Several buildings increase a kingdom's Culture capacity when built.