Press [Enter] while playing, type any of the following codes, then press [Enter] again:
Code - Result:

moneyfornothing - Set Mana and Gold to 9999
borntorun - Party Movement Points to Full
help! - Heal Entire Party
wearethechampions - Win Mission
loser - Lose Mission
herecomesthesun - Unlock Entire Map
paintitblack - Hide Unseen Map
anotherbrickinthewall - Allowed to Build at Capital
givepeaceachance - Peace with all Nations
badtothebone - War with all Nations
cometogether - Alliance with all Nations
jump - Members XP to Next Level -1
stairwaytoheaven - Level Up for Entire Party
lifeisacarnival - Revive All Dead
allalongthewatchtower - View Enemy Info
invisibletouch - Unknown Effect
letsdothetimewarpagain - Unknown Effect