Spidertron

Spidertron is a late-game combat vehicle item that can be used to deploy a Spidertron, a powerful autonomous walker with a large equipment grid. It is one of the most versatile mobile platforms in Factorio, combining movement, combat, and equipment-based upgrades in a single entity.

In combat, the Spidertron’s four rocket launchers operate in chain mode, allowing it to fire rockets rapidly at enemies. It can be set to automatically target hostile units, whether or not a player is riding inside it. Its combat strength is further improved by its equipment grid: shields can be installed to increase survivability, while personal laser defenses can raise its offensive power. Equipment placed in the Spidertron’s grid works in addition to any modules the riding player has equipped in their own power armor.

The Spidertron’s movement has several unique properties compared with cars and tanks. Its speed is not affected by the surface it travels on, so it moves at the same rate across different terrain types. Because of the way it walks, its speed fluctuates slightly and does not remain perfectly constant at its maximum value. It does not consume fuel, and its speed can only be increased by installing exoskeletons in its equipment grid.

• Up to 5 exoskeletons can fit in the Spidertron’s grid.
• Its approximate top speed is:
  • Default: ~46 km/h
  • 1 exoskeleton: ~57 km/h
  • 2 exoskeletons: ~68 km/h
  • 3 exoskeletons: ~85 km/h
  • 4 exoskeletons: ~90 km/h
  • 5 exoskeletons: ~102 km/h

Because the Spidertron has no fuel requirement, its mobility and performance are determined entirely by its installed equipment. A balanced setup often mixes exoskeletons for speed with defensive or offensive equipment for combat roles, while a fully equipped configuration can make it both a fast transport and a heavily armed assault unit.