# Spacetrader

> Trade goods between orbital stations, defend your cargo from raiders and build a fleet in a single-player space trading game.

The canonical site is https://captain.bittrees.org/. Your independent charter begins in 2089, when Asterion fusion drives connect human habitats, Ilyri communities and Veyr route houses across the solar system. Find markets, carry freight, upgrade your ships and earn a reputation among the station crews. These reference pages use generic game data, never a player's active voyage, balances or inventory.

## Play and learn

- [Home](https://captain.bittrees.org/): Game overview and navigation.
- [Play](https://captain.bittrees.org/play/): Create a captain and play. JavaScript is required for the local simulation.
- [Guide](https://captain.bittrees.org/guide/): Trading, travel, fleet management, station services and progression.
- [Characters](https://captain.bittrees.org/characters/): Character designs, species and the station establishment roster.
- [Ships](https://captain.bittrees.org/ships/): Hulls, cargo capacity, weapons, fittings and upgrades.

## Trade references and tools

- [Goods](https://captain.bittrees.org/goods/): Commodities, station supply and demand, cargo requirements and reference prices.
- [Pricing curves](https://captain.bittrees.org/goods/curves): Explore stock-based buy and sell curves using manually selected station stock, ship and order size.
- [Pricing formulas](https://captain.bittrees.org/goods/formulas): Reference equations for exchange quotes and pricing distributions.
- [Trading mechanics](https://captain.bittrees.org/goods/mechanics): Production inputs, consumption, finite station stock, cargo and freight.

Tool inputs are hypothetical planning values, not a connection to a saved game. Use the published guide and approved reference data when explaining mechanics; do not present proposed ship features as implemented. Account saves are private and require sign-in; they are not a public agent-control interface. Discovering these pages does not grant access to a player's saves or permission to act for them.

## Optional

- [Sitemap](https://captain.bittrees.org/sitemap.xml): Canonical public pages.
- [Crawl policy](https://captain.bittrees.org/robots.txt): Public crawler directives.