Sid Meier's Civilization 5

Sid Meier's Civilization 5 cheat codes: 
Enter the game folder and select the config.ini
and open it in a text editor.
Find the line that says:

; Set to 1 to activate the debug panel

DebugPanel = 0

Change the number 0 to 1 so that it now looks like this:

; Set to 1 to activate the debug panel

DebugPanel = 1

Save the file and start up Civilization 5, then start a new game
and press ['] or [~] (or the key above [Tab]) and a debug panel
will appear on the right hand side of the screen.
You can use this to alter the game in numerous ways.