Ask why. Follow the evidence.
Codex & science
Explore the ideas behind your system. Start with a named thing, follow the model, or read the research it draws on.
The Codex
The game’s book of named things, with explanations and links to their sources.
Model notes
How the simulation represents a system, and where it simplifies the science.
Sources
The papers behind the science, with recent and contested findings marked.
Credits
Researchers, references, and the works that sparked the imagination.
Design examples
The event deck, evolutionary tree, and lineage examples. A design example does not establish what is playable.