Revision 4

The Moon Gate is a location named in the Fatekeeper gameplay reveal trailer. The Druid and the talking rat are heading toward it; the rat references it directly during banter. Beyond the name, almost no details about the Moon Gate have been revealed in pre-launch material.

What is Confirmed

• The Moon Gate is a destination, not a passing landmark.

• Reaching the Moon Gate is part of an early-game route shown in the reveal trailer.

• The talking rat knows about it and references it explicitly.

What is Not Confirmed

• Whether the Moon Gate is a literal gate, a settlement, a ritual site, or a chunk of architecture.

• Whether the Moon Gate connects to the Underdwellers or to surface lore.

• Whether reaching the Moon Gate is the campaign's main objective, a side beat, or an early goal that opens onto something larger.

• Whether the name is metaphorical (the moon being a half-remembered myth in Underdweller history) or descriptive.

Speculation

Pre-launch lore makes the moon a recurring symbol: the Underdwellers' surface-rediscovery dev blog talks about the moon as one of the things that overwhelmed them when they finally broke back to the surface. A gate named for the moon could be a site of significance to either side of the surface-versus-underground conflict, or to the Sentinels of Solace. Without further dev material, this is interpretation rather than fact.