Enter these codes during the game:

GLITTERING PRIZES - 10000 gold, 5000 lumber, and 5000 oil
VALDEZ - 5000 oil
HATCHET - lumber is harvested after 2 chops
HATCHET, AXE AND SAW - dramatically increases lumber harvesting speed
MAKE IT SO - builds faster
IT IS A GOOD DAY TO DIE - invincibility
SHOWPATH - uncovers map
ON SCREEN - uncovers map (without fog)
NOGLUES - turns off magic traps
TOMBSTONE - turns off orc traps
SPYCOB - more oil
DECK ME OUT - upgrades everything
EVERY LITTLE THING SHE DOES - full magic
THERE CAN ONLY BE ONE - final ending
TITLE - increases the speed of your units
FASTEMO - demo starts earlier
UCLA - shows "Go Bruins!" message
DAY - shows "FIEF" message
NETPROF - laser display
TIGERLILY - enables jumps between levels by typing HUMAN x or ORC x
ORCx OR HUMANx - by typing in either ORC or HUMAN followed by a number from 1 to 14, this cheat will immediately jump you to that scenario in the campaign. Must enter the TIGERLILY cheat before you can use this cheat.
UNITE THE CLANS - instant victory
YOU PITIFUL WORM - instant defeat