Ganymede is the largest moon in the Solar System in real life, although in game it is tied with Titan and Callisto for the largest moon. It is the third moon of Jupiter.
Appearance[]
Ganymede takes on the appearance of an uninteresting gray ball, although different patches of rocky material can be found. Ganymede's most distinguishable feature before terraforming would be the Monolith or the spire it spawns after contact.
The Monolith and the Human Shop[]
The monolith appears on Ganymede and is fenced off and guarded by Galileans. Touching it will result in The Entity spawning. Nearby the Monolith is a house similar to Eric's, except it is packed with guarding squids that will shoot you on sight. More information about the Monolith here.
Gameplay[]
Under Ganymede there is a subsurface ocean surrounding the core that you can excavate into using explosives. There are no animals there unlike Europa. Ganymede has a decent amount of metal and low amounts of gas. During the terraforming process, a skinny atmosphere will appear, as well as an ocean. When it is fully terraformed, grass will cover its surface and trees will grow on it. When fully terraformed, Ganymede has gas, so Drones or Depot/Junction chains aren't mandatory.