The Children of Teer Fradee were inspired by both Native Americans and Celtic / Gaelic people.
A linguist was hired to create the language of the Teer Fradee natives
The game draws its visual style from 17th century Europe, specifically Baroque art and architecture.
GreedFall features six different factions: the Congregation of Merchants (to which the player character belongs); the Nauts (a guild of navigators); the Coin Guard (a guild of warriors and bodyguards); Thélème (a theocratic state inspired by the Catholic Church); the Bridge Alliance (visually inspired by the Ottoman Empire); the Children of Teer Fradee (the natives of the island the other factions have colonized). The game keeps track of the player's relationships with all factions, which can be improved by completing missions for them.