From Civilization V Wiki
FireTuner2 allows you to see (and change) some of the data behind a currently running Civilisation V game. It offers a game console for debugging as well as customised views onto some of the database (such as the current units, GNP, diplomacy, etc).
- FireTuner2 is included in the Civilization V SDK, which is currently available for download from Steam as a utility.
- FireTuner2 requires Microsoft .NET 3.5 SP1 or later to be installed.
To enable FireTuner2, open <My Documents>\My Games\Sid Meier's Civilization 5\config.ini and replace "EnableTuner = 0" with "EnableTuner = 1"