What name does Assassin's Creed give to its powerful precursor artifacts?

Assassin's Creed calls its powerful precursor artifacts Pieces of Eden.

The Pieces of Eden were created by the Isu, an advanced civilization that existed before recorded human history in the series' mythology. The artifacts can influence human minds, alter perception, and perform other extraordinary functions, depending on the individual object.

The Apple of Eden is the best-known example. It appears in several games and is frequently connected to the Templars' desire to control humanity. Other artifacts include the Staff of Eden and the Shroud of Eden, each with different abilities and story roles.

The term is sometimes confused with the Apple of Eden, but the Apple is one specific Piece of Eden rather than the collective name. The artifacts link the modern-day plot with the historical adventures experienced through the Animus.