The Geo-Laser is an upgrade to Clank granted by the Zoni in Tools of Destruction. It allows Clank to use a laser which can cut through natural surfaces to enter an area. It also causes a bright green beacon to appear on Clank's head to point Ratchet to an area where the Geo-Laser can be used. The Geo-Laser is used by directing it with the SIXAXIS motion-sensitive controller (or analog stick if changed in options) to guide the laser to follow target reticules.
The Geo-Laser is granted to Clank by the Zoni on the Apogee Space Station when Ratchet and Clank are unable to bypass a door, and given to him in order to laser through to reach the next room.