A Chip is a recurring collectable in the NiGHTS series. Its a floating shiny blue orb that can be found through the levels. Their purpose changes in each game.
NiGHTS into Dreams
In NiGHTS into Dreams and Christmas NiGHTS, the Chips are what NiGHTS uses to recover the stolen Ideyas from the Nightmarens. They player must collect 20 chips to break the Ideya Captures. Afterwards, the chips will turn from blue to gold. Chips also give the player 10 points when collected and when collected fast enough, chips can create links.
NiGHTS: Journey of Dreams
In NiGHTS: Journey of Dreams they don't have any purpose in any level where the player controls NiGHTS and they are simply used to make the score higher. However, they serve as weapons for Will and Helen. The visitors can collect the chips and shoot them at the Nightmarens to protect themselves. The chips can also be used by Will and Helen to feed the Nightopians.