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+# Anno 117: Pax Romana - Game Data Reference
+
+> **Version:** 0.2 (compiled from provided research files; not yet a full extracted DB)
+> **Focus:** Sandbox / Endless Mode mechanics (no controls/UI bindings)
+>
+> **Scope Warning (important):**
+> This document only includes **entities and numeric stats explicitly present** in the supplied research files.
+> Where a field is unknown, it is marked `Unknown` (not guessed).
+
+---
+
+## Categories
+
+### [Schemas](./schemas/_index.md)
+Entity type definitions and field specifications for all game elements.
+
+### [Population Tiers](./population-tiers/_index.md)
+The four population tiers: Liberti/Waders, Plebeians/Smiths, Equites, and Patricians.
+
+### [Goods](./goods/_index.md)
+All tradeable and consumable goods in the game, including food, materials, and luxury items.
+
+### [Buildings](./buildings/_index.md)
+Production facilities, service buildings, and infrastructure.
+
+### [Production Chains](./production-chains/_index.md)
+How goods are produced and the recommended building ratios.
+
+### [Ships & Naval](./ships/_index.md)
+Ship hulls, modules, and naval combat systems.
+
+### [Specialists](./specialists/_index.md)
+Characters that can be slotted into buildings to modify stats.
+
+### [Systems](./systems/_index.md)
+Core game mechanics including trade, maintenance, and area effects.
+
+### [Monuments](./monuments/_index.md)
+Large-scale constructions with island-wide effects.
+
+### [Troubleshooting](./troubleshooting/_index.md)
+Common issues and their solutions.
+
+### [Glossary](./glossary.md)
+Key terms and definitions.