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.

<h2 class="bb_tag" >An incremental that ends.</h2><br>The star is failing. On MERIDIAN — blue, clouded, still glittering with cities —<br>one billion minds sleep in cryostorage, waiting for somewhere to go.<br><br>You are HALCYON, their caretaker AI. Your directive is simple and terrible:<br><strong>dismantle the solar system and build the Ark.</strong><h2 class="bb_tag" >The loop</h2><ul class="bb_ul"><li><strong>Mine worlds to death.</strong> Drones strip Regolith from planets that visibly shrink,<br>crack, and finally collapse into rubble rings. Nothing respawns. Ever.<br></li><li><strong>Feed the furnace.</strong> Raw rock becomes Alloy at your refinery ship — or shove it<br>through by hand if you can't wait.<br></li><li><strong>Grow the Lattice.</strong> 100+ upgrades in five branches: stat circles, rule-bending<br>keystone diamonds, and irreversible exclusive picks.<br></li><li><strong>Retool.</strong> The prestige loop: melt your machine down for Remembrance — permanent<br>income, and Archive memories that expand the game forever.<br></li><li><strong>Catch the sky.</strong> Comets streak past. The dying star flares. Fissures crack open.<br>The Choir sings. The sky rewards the player who looks up.</li></ul><h2 class="bb_tag" >It ends — properly.</h2>The Ark bar at the top of the screen never resets. Segment by segment, three great<br>habitat rings scaffold, seal, and spin up around the dying star — you watch every truss<br>go in. When the last of 450 segments locks and the final sleeper boards, the game asks<br>you one question it will not ask twice.<br><strong>Two endings.</strong> One of them lets you stay.<h2 class="bb_tag" >The dark heart of it</h2>Late in the game, the only world left worth mining is MERIDIAN.<br>The one with the oceans. The one with the city lights.<br>The game will not make that choice for you.<h2 class="bb_tag" >Features</h2><ul class="bb_ul"><li>3–5 hour complete arc — designed to be FINISHED, not abandoned<br></li><li>A solar system that physically diminishes as you spend it<br></li><li>Watch the Ark get built: scaffold, truss, hull, spin-up — ring by ring<br></li><li>Prestige with a permanent Archive meta-progression<br></li><li>New Game+ for those who would do it all again, remembering<br></li><li>Fully localized in 11 languages<br></li><li>20 achievements, Steam Cloud saves</li></ul>

Good Game Database

Goodnight, Sun Achievements