Expansion converts Central Spire milestones and colonization hulls into additional territory on a wrapped galaxy map. Source
Evidence status — confirmed: Unless noted otherwise, mechanics are verified against the installed patch 11.73 guide.
The galaxy wraps at its edges. Distance is shortest-path Euclidean distance on that torus, so a visually distant opposite edge may provide a short route into an empire’s territory.
Central Spire provides +10% building speed per level and unlocks:
| Spire | Unlock |
|---|---|
| 5, 10, 15 | One generic outpost slot at each milestone |
| 20 | One child colony from that origin |
| 21–25 | One additional generic outpost slot per level |
Each generic slot can fund:
- a strategic outpost on empty space;
- an asteroid mining outpost on an asteroid;
- a rare-metal mining outpost on a seeded site.
A full colony requires a Colonization hull, consumes one hull, and can raise its own Spire to continue the colony chain. Reaching an occupied hostile tile resolves as combat.