What is the name of the fictional language spoken by the Isu in Assassin's Creed lore?

The fictional language spoken by the Isu in Assassin's Creed lore is called the Isu language.

The Isu, also known as the First Civilization or Those Who Came Before, are an advanced precursor species that existed before recorded human history in the series' mythology. They created many Pieces of Eden and engineered humans, making their language part of the franchise's deeper historical and science-fiction background.

The games present Isu inscriptions, names, symbols, and spoken lines in different contexts, especially in later entries such as Assassin's Creed Odyssey and Assassin's Creed Valhalla. The language is fictional and is not a complete real-world language with a standard everyday vocabulary comparable to English or Greek.

Players sometimes use terms such as “Edenic” when discussing the precursor civilization or its artifacts, but that is not the standard name for the language in the series. “Animus code” is also a separate concept: it refers to the simulation technology used to access genetic memories, not to a spoken language. The safest canonical answer is simply the Isu language.