Korthos Gamma was a moon in the Korthos Sector. It was one of the harder moons, a magma moon covered in lava with several rocky islands and platforms utilised for traversing it. One Zoni was found here, though it was heavily guarded by Agorians.
The moon was covered in hot lava, which would consume and kill any living thing which landed within it. The only way to traverse the lava was to hop across several platforms and small rocky islands, though even some of these platforms had been rendered unusable by the lava's piercing heat, some even having been completely consumed by the magma. The only way to get across the platforms which had been made unusable was to cool them down using water from an OmniSoaker, filled up using a plant near the docking bay. As for the platforms beneath the lava, they would need to be fished out using a which crank.
When Ratchet was in the Korthos Sector, he visited Korthos Gamma, where he defeated all of the inhabiting Agorians and collected the Zoni.