The GrummelNet Plasma Harvester was a multiplayer level in Ratchet & Clank: Full Frontal Assault. It was more of a mirror-view map with node one as the only difference.
The GrummelNet Plasma Harvester appears as a volcanic planet with dozens of geysers spewing dangerous levels of plasma from its core, each area was covered by mining facilities. These facilities take out the planet's feul as a possible bank for refilling ships, weapons and anything that requires plasma. The origins of the planet's mines are a complete mystery, but they are managed by enemies.
Each level is comprised of a vast battleground area where you, the player must start at. You may be able to find dozens of crates and areas that are hazards. If you go around the entire area, you can get dozens of bolts. (Most likely the highest number of bolts in each of the levels available)