FEATURES — Planets

Planetary gameplay — colonization, citadel progression, defense, production, and the surface-level economy. See ../README.md for the FEATURES doc set as a whole; this README indexes the planets sub-section.

Index

• planetary-survey.md — Site discovery: the mandatory expedition loop, at-launch expedition model, site traits, onboarding accommodation, and contested settle (claim race). (ADR-0091, design-only)
• colonization.md — Founding a colony: requirements, initial citadel level, population seeding.
• citadels.md — Citadel level progression (1–10), upgrade flow, defensive prerequisites, the safe vault.
• defense.md — Defensive buildings (turrets, shields, orbital platforms), per-citadel-level unlocks.
• production.md — Per-planet commodity production, citadel level multipliers.
• professions.md — Citizen professions (miners, farmers, technicians, etc.) and their production effects.
• terraforming.md — Habitability score, atmosphere/biosphere/water tuning, terraforming formula.

Sibling areas

• ../gameplay/ — combat, ranks, factions, ships
• ../economy/ — trading, mining, contracts
• ../galaxy/ — sectors, warp gates, formations, generation

Conventions

Each doc describes target behaviour in present tense. Implementation status (✅ Shipped / 🚧 Partial / 📐 Design-only / 🐛 Bug) lives inline next to the relevant feature in each doc.