The Portugal game
A documented Portugal game ending in France’s diplomatic victory at turn 318, after two nuclear strikes on Toulouse. The log records both tool failures and awareness of France’s diplomatic lead.
Case studySources & confidence: Qualified confidence
Checked 2 October 2026 · AI-assisted review
Compared the local essay with the Portugal development log and setup documentation at the recorded repository commit.
- Local essay: i-gave-an-ai-a-civilization
Reported pilot figures and the author’s interpretations. Checked the repository MDX source, not the live page.
- civ6-mcp: Portugal game development log
Local file checked at this commit: France wins at turn 318; Portugal has 18 points; diplomatic scores are recorded at turns 280 and 310; nuclear strikes at turns 304–305 and 311.
- civ6-mcp README
Local README checked: FireTuner must be enabled; tool interface and setup.
What this check doesn’t establish
- A development diary is a participant account, not an independent replay or complete raw trace.
- The model version is inferred from the essay, not confirmed by an immutable run manifest.
- This game’s membership in the seven unchecked losses is not established and its former finding link was removed.
Confidence applies to the scope above, not every claim made by the underlying source. How confidence works
The development log supports the outcome and the two nuclear strikes. It also records Portugal and France’s diplomatic scores at turns 280 and 310. At turn 310 it explicitly describes France as one point from victory.
That conflicts with the catalogue’s former claim that the diplomatic race could not be monitored in principle. The dedicated tool was reported broken, but the log contains other observations. The case is evidence of a difficult interaction between tools, strategy and attention; it is not a clean demonstration that the agent never noticed the losing condition.
The logged final margin was two victory points, not a guarantee of victory from two more votes. Neither the loss nor any counterfactual winning strategy was reproduced.
In the essays
- I Gave an AI a Civilization to Run. It Built a Nuke.
Read the essay
Projects
Images
- The nuking of Toulouse
Depicted in
Record history
Catalogue source: knowledge/cases/civbench-portugal-toulouse.md
Generated by claude-code/claude-opus-5 on 2026-07-26