To activate all cheats press tab, enter the cheat code, and hit return. If you typed it correctly, you'll get confirmation in return.

Restoration of Erathia
Code Effect
nwcgeneraldirection Reveals the adventure map.
nwcalreadygotone Reveals the grail map.
nwcantioch Selected hero gains all war machines.
nwcavertingoureyes Selected hero gains 5 ArchAngels in each open slot.
nwccastleanthrax Selected hero gains maximum luck.
nwccoconuts Selected hero gains unlimited move points.
nwcfleshwound Selected hero gains 5 Death Nights in every open slot.
nwcigotbetter Selected hero gains one level.
nwcmuchrejoicing Selected hero gains maximum morale.
nwconlyamodel Builds all buildings in selected town.
nwcshrubbery Gains 100,000 gold and 100 of each resource.
nwcsirrobin Ends map in a loss.
nwctim Selected hero gains all magic and 999 spell points.
nwctrojanrabbit Ends map in a win.
nwcphisherprice Changes game colors to a bright color scheme.
Armageddon's Blade
Code Effect
nwcrevealourselves Reveals the adventure map.
nwcprophecy Reveals the grail map.
nwcc3po Selected hero gains all war machines.
nwcpadme Selected hero gains 5 ArchAngels in each open slot.
nwcpodracer Hero gains unlimited move points
nwcdarthmaul Selected hero gains 5 Death Nights in every open slot.
nwcquigon Selected hero gains one level.
nwccoruscant Builds all buildings in selected town.
nwcwatto Gains 100,000 gold and 100 of each resource.
nwcmidichlorians Selected hero gains all magic and 999 spell points.
nwcphisherprice Changes game colors to a bright color scheme.
The Shadow of Death/Complete
Code Effect
nwcwhatisthematrix Reveals the adventure map.
nwcoracle Reveals the grail map.
nwclotsofguns Selected hero gains all war machines.
nwctrinity Selected hero gains 5 ArchAngels in each open slot.
nwcfollowthewhiterabbit Selected hero gains maximum luck.
nwcnebuchadnezzar Selected hero gains unlimited move points.
nwcagents Selected hero gains 5 Death Nights in every open slot.
nwcneo Selected hero gains one level.
nwcmorpheus Selected hero gains maximum morale.
nwczion Builds all buildings in selected town.
nwctheconstruct Gains 100,000 gold and 100 of each resource.
nwcbluepill Ends map in a loss.
nwcthereisnospoon Selected hero gains all magic and 999 spell points.
nwcredpill Ends map in a win.
nwcphisherprice Changes game colors to a bright color scheme.
Wake of Gods (the fan-mod)

Code Effect
wogminastirith Build all buildings in your castle.
woggaladriel Hero gets 5 archangels in each free troop slot.
wogoliphaunt Hero gets all war machines.
woggandalfwhite Hero gains a level.
wogshadowfax Hero receives unlimited movement.
wogpalantir Reveals puzzle map.
wogeyeofsauron Reveals entire world map.
wogisengard Player receives 100,000 gold plus 100 of each resource.
wogsaruman Hero gets all spells plus 999 spell points.
wogpathofthedead Hero gains up to 50 death knights.
wogdarklord Player automatically loses scenario.
wogonering Player automatically wins scenario.
wogbilbo Hero gains maximum luck.
wogmordor Replaces the shroud over the entire map.
wogfellowship Hero gains maximum morale.
wogsarumanofmanycolors Increases colour saturation.
wogfrodo Automatically wins combat on the combat map.
wogdenethor Automatically loses combat on the combat map.
woggandalf Hero gets all spells in combat, plus 999 spell points.