Precursor artifacts are any objects of precursor origin. This includes the various large precursor structures seen in the game, but also any and all Eco found throughout the Jak and Daxter series. Precursor artifacts make up a large role in the series and are a common sight in locations but also are an important gameplay element.
A mystical substance with various know and unknown powers and purposes. Originally created by the Precursors, it was studied by Eco Sages and later used in various technologies in the Haven-era timeline. Eco is produced at the Eco Core, and is the lifeblood of the universe.
An Eco of power, specifically that of range. When channeled it can be used to shoot fireballs from your hands that automatically seek out targets. It is used to power long-range weapons. The sage of Yellow Eco is the Yellow Sage.
An unstable Eco of immense power. It cannot be channeled normally and is incredibly difficult to control. It's lethal in large amounts, while small amounts will slowly infect or otherwise corrupt anything it comes into contact with. Dark Jak was such a product of Dark Eco experiments. It's used as a fuel source in the Haven-era timeline. There have been two known Dark Eco sages, Gol Acheron and Tym.
A mysterious Eco, created by merging all four secondary Eco's and subsequently exhibits traits of all four. It can be used for healing, generating a shield, slowing down time, flight and is capable of destroying even the most powerful enemies in a single hit. Jak is the only known user of Light Eco, which allows him to turn into Light Jak. There is no sage of Light Eco.
A Precursor Robot is a giant humanoid robot, which is incredibly powerful. It is used presumably for guarding duties and has a variety of weapons. Gol and Maia Acheron owned one, and count Veger used one against Jak.