Jak and Daxter Jump

From the introduction:

Eons ago the precursors roamed the world seeding it with eco a potent form of life energy that and building great bronze monoliths to their civilisation then one day they vanished. Years later man rose and for as far back as history remembers man has pondered the mysteries left behind by the precursor forebears. Why did they create the vast temples left behind, what was the purpose of eco and why did they vanish? In my life i have been privileged to witness the answer to many of these questions as much by luck as by effort but that's how these things go sometimes, my name is Samos Hagai and i will be your guide here… hopefully you’ll actually listen unlike my students.