# 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. ### [Guides](./guides/_index.md) Strategy guides and decision-making help. ### [Glossary](./glossary.md) Key terms and definitions.