Haven City functions as the game hub world, with various other environments accessible from it. Here, Jak can access new missions by visiting various allied characters. These missions serve as a replacement for the previous game's Power Cell collection driven gameplay in the first installment of the series. Throughout the game, the player can collect Precursor Orbs which are sparsely dispersed throughout the various worlds. The Orbs are non-essential to completion of the game but allow the player to unlock cheats and other "secret" content. Jak can traverse the large city using hover vehicles and a jet-board which allows him to hover across water and grind on rails.