Dark Eco - Jak and Daxter Collection Guide - IGN

With its ability to warp and mutate, Dark Eco is considered the most dangerous kind of Eco. Large amounts resemble a thick black ooze with a purple sheen;

Jak and Daxter: The Lost Frontier (2009) - MobyGames

Jak and Daxter - Wikipedia

Jak and Daxter: The Lost Frontier (2009) - MobyGames

Jak and Daxter - PlayStation All-Stars Battle Royale Guide - IGN

Dark eco, Jak and Daxter Wiki

Jak and Daxter, Ultimate Pop Culture Wiki

Jak and Daxter Collection Guide - IGN

Jak and Daxter: The Precursor Legacy, Jak and Daxter Wiki

Jak And Daxter Games - IGN

FREE DWLD] Piggyback: Jak II The Complete Official Guide