Vehicles - Given the enormity and variance in terrain of the Wasteland, vehicles play a large role as off-road transportation is introduced, fueled by a true-to-life physics engine.GameSpy said the vehicles had "sluggish control systems" and thought "a specialized dune buggy wouldn't keep on flipping on its side as much as Jak's vehicles tend to."
The Old World - The Jak world as of The Precursor Legacy. A fictional planet created by Naughty Dog specifically for the game. It contains a multitude of very different locales for the player to explore, ranging from jungles to volcanoes.
Haven City - A dystopia ruled by Baron Praxis and his Krimzon Guard law enforcers. Haven City often serves as a hub, whereas the player is given tasks that must often be fulfilled outside of the city, places that are separated via airlocks. In Jak 3 the city is engulfed in war for control of the streets. This city is the successor of Sandover Village.
The Wasteland- A desert environment five times the size of Haven City with multiple areas including mines and a volcano. Given the enormity and variance in terrain, vehicles play a large role as off-road transportation is introduced, fueled by a true-to-life physics engine. It ranked 8th place on IGN's "The Wednesday 10: Gaming Dystopias"