Europa Universalis Cheats

Press F12 during game to bring up the console window and type in the codes.

richelieu - allows you to control all military units (toggle ON/OFF)
pappenheim - toggles Fog of War ON/OFF
columbus - explores all provinces
gustavus - increases land technology level
drake - increases naval technology level
cromwell - increases infrastructure level
polo - increases trade level
oranje - sets Stability to +3
cortez - eliminates natives (toggle ON/OFF)
alba - eliminates revolts (toggle ON/OFF)
tilly - the A.I. will not declare war (toggle ON/OFF)
montezuma - adds 50.000 ducats to treasury
pocahontas - adds 10 colonists
dagama - adds 10 merchants
swift - adds 10.000 population to capital province
tordesillas - triggers the effects of the Treaty of Tordesillas (allows Spain and Portugal to attack anyone outside of Europe) (toggle ON/OFF)
luther - triggers the effects of the Reformation (allows nations to convert to protestantism) (toggle ON/OFF)
calvin - triggers the effects of John Calvin (allows nations to convert to reformed christian) (toggle ON/OFF)
trent - triggers the effects of the Council of Trent (cancels effects of Johan Calvin and Treaty of Tordesillas) (toggle ON/OFF)
peterthegreat - troop limits
russianhordes - more cannonfodders
difrules - god mode (toggle ON/OFF)
vatican - adds 10 diplomats
shogun - closing Japan
event [#] - Trigger Event [#] (See List)
luther - Triggers Effects of Reformation
calvin - Triggers Effects of John Calvin
trent - Triggers Effects of Council of Trent

Other commands:

info
load
save
dump
addplayer
removeplayer
messgroup
messall
creategroup
closegroup
language

shift + D = Explore province under cursor
shift + U = "Unexplore" province under cursor