Europa Universalis 3 cheats and cheat codes for PC

Cheat mode:
While playing the game, press § then type any of the following cheat 
codes at the console window.
or
Hold Alt key and press 21 on the numeric keypad while playing to 
bring up the console window.


Code - Effect
Type "diplomat" as a code - Gives diplomats
Type "die native" as a code - Native attack
Type "colonist" as a code - Gives colonists
Type "cash" as a code - Gives money
Type "stability" as a code - Gives stability
Type "spy" as a code - Gives spies
Type "revolt " as a code - Start revolt
Type "prestige " as a code - Gives prestige
Type "pirate" as a code - Gives pirates
Type "morehumans" as a code - Unknown effect
Type "missionary" as a code - Gives missionaries
Type "merchant" as a code - Gives merchants
Type "fullscreen" as a code - Switch to full screen
Type "fow on" as a code - Fog of war ON
Type "fow off" as a code - Fog of war OFF
Type "event (event ID)" as a code - Trigger event
Type "discover (province ID)" as a code - Discover indicated province
Type "undiscover (province ID)" as a code - Undiscover indicated province


Invest in technology:
Usage: invest  

You can use the following entries with the invest code. 

land_tech
trade_tech
production_tech
naval_tech
ledger_production_tech
ledger_naval_tech
ledger_goverment_tech
government_tech
cureent_tech
country_morale_tech
advisor_arrived_tech