Goodnight, Sun

Goodnight, Sun is an incremental game about dismantling a solar system to build an Ark. The star is failing, and on MERIDIAN, a blue, clouded world still glittering with cities, one billion minds sleep in cryostorage, waiting for somewhere to go. You play as HALCYON, their caretaker AI, tasked with building the Ark.

Dismantle the system

Drones mine Regolith from planets, which visibly shrink, crack and eventually collapse into rubble rings. Nothing mined respawns. Raw rock becomes Alloy at your refinery ship, or you can process it by hand if you want to speed things up.

You invest in the Lattice, which has over 100 upgrades across five branches. These include stat circles, rule-bending keystone diamonds and exclusive choices that cannot be reversed. You can also melt down your machine in a prestige loop to gain Remembrance, which provides permanent income, and Archive memories that expand the game’s progression.

Watch the sky

Comets pass, the dying star flares, fissures open and the Choir sings. These events reward you for looking up.

Build the Ark

The Ark’s progress never resets. Across 450 segments, three habitat rings are scaffolded, sealed and spun up around the dying star, with each truss added visibly. When the final segment locks into place and the last sleeper boards, the game presents a choice with two endings. One ending lets you stay.

Late in the game, MERIDIAN is the only world left worth mining: the one with oceans and city lights. The game leaves the decision of what to do with it to you.

After the ending

The complete story arc takes 3–5 hours and is designed to be finished. New Game+ lets you begin again with your memories, and the game includes 20 achievements and Steam Cloud saves.