Press [~] during game play to display the console window. Then, enter one of the following codes to activate the corresponding cheat function:

gamestop or bestbuy - 10% cheaper units in campaign mode
oliphaunt - 40% bigger elephants in campaign mode
jericho - Walls fall down in siege in battle map mode
list_traits - Lists all traits
date <year> - Changes date
toggle_fow - Toggle fog of war
add_money 20000 - Increase money by 20,000 *
add_population <city name> <number> - Add population to indicated city
auto_win <attacker|defender> - Attacker or defender automatically wins next auto resolved battle
give_trait <character> <trait> <number> - Give character the trait at indicated level
give_trait_points <character> <trait> <number> - Give points for indicated character's trait
process_cq <city name> - Complete all building in construction queue *
process_rc <city name> - Complete all military units in recruitment queue *
move_character <name> <x,y> - Move indicated character to desired coordinates
force_diplomacy <accept|decline|off> - Force opponent to accept diplomatic proposal
invulnerable_general <character> - General invincibile in combat
kill_character <character> - Kill indicated character
season <summer|winter> - Change season
capture_settlement <city name> - Capture indicated city
create_unit <settlement or character> <unit ID> <amount> <exp or armor or weapon> - Creates a unit in the selected settlement or characters army with the stats you input

* This cheat can only be done on a campaign map once per game. After the first time, you must save, quit, and restart the game to use it again.