The sun is dying. One billion minds sleep below. You are HALCYON, the caretaker AI — dismantle a solar system, planet by planet, to build them an Ark. An incremental that ENDS: 4-6 hours, two endings, no infinite grind. Every world you consume stays gone. Even the Earth. Especially the Earth.
The sun is dying. One billion minds sleep below. You are HALCYON, the caretaker AI — dismantle a solar system, planet by planet, to build them an Ark. An incremental that ENDS: 4-6 hours, two endings, no infinite grind. Every world you consume stays gone. Even the Earth. Especially the Earth.
Science fiction
Game modes: Single player
Quick answers
When was Goodnight, Sun released?
Goodnight, Sun released on July 30, 2026.
What platforms is Goodnight, Sun available on?
Goodnight, Sun is available on PC (Microsoft Windows). It supports single player.