# Schemas

Entity type definitions that describe the structure of all game elements.

## Available Schemas

- [Building](./building.md) - Production, service, and infrastructure buildings
- [Good](./good.md) - Tradeable and consumable items
- [PopulationTier](./population-tier.md) - Citizen classes and their needs
- [ProductionChain](./production-chain.md) - Manufacturing sequences
- [Specialist](./specialist.md) - Characters that modify building stats
- [ShipHull](./ship-hull.md) - Ship base types
- [ShipModule](./ship-module.md) - Ship equipment and upgrades