Titan's surface is water ice, hard as granite at 94 K, buried under organic sand.
Water ice is a node you crack with an ice axe. It feeds the melt tank that makes your oxygen.
Tholins — orange organic haze particles — settle out and blow into dune fields hundreds of kilometres long.
Tholin is the entry-level resource: everywhere, worth 1 joule, the floor of every recipe.
It rains liquid methane. The drops are large and fall slowly in the low gravity and thick air.
Methane rain is the weather event. It costs you 50% more heat in the open and cuts sightlines to 60 metres.
Titan is tidally locked, so Saturn hangs at a fixed bearing and only changes phase.
The sky is your clock. Saturn's phase tells you where you are in the turn without opening a menu.
Titan passes through Saturn's shadow, and the surface goes dark with no ring-shine at all.
Eclipse is the coldest ninety seconds of the turn, and the point at which crawlers start hunting by heat.
Kraken Mare is a sea of liquid methane and ethane roughly the size of the Caspian.
Phase 4. Boats, methane sailing, and salvage off the sea floor.
The atmosphere is thick and the gravity low enough that a human could fly with strap-on wings.
Not modelled. It would break the walk-back-before-you-freeze tension the whole game is built on.