Press ENTER to get the message line. Then press + and enter one of the following codes. After entering the code, press ENTER to activate the code. To deactivate a code, just enter it again.

Code Description:
ATM Increase metal and energy by 1000
Radar Acts like 100% radar coverage
DoubleShot 2X damage of all weapon fire across board
Contour# Shows 3d contour mesh; replace # with 1-5
Dither Changes the gray line-of-sight to a dither
NowISee Exposes map and turns line-of-sight off
sing Makes the robots sing
NOSHAKE Stops screen explosion shakes
SWITCHALT Allows you to switch between squads with alt+# keys.
VIEW# Lets you see how much metal and energy a player has.
METEOR Random Meteor showers on map
Bigbrother Units say different things when you move them
clock Show game clock
honk Units honk sometimes when they stop

Skirmish mode Cheats:
Cheats for total annihilation work on skirmish only press enter to get the
line then press +

code description
cdstart cd music starts
halfshot all weapons do half the damage
iwin you win
ilose you lose
noenergy drops energy to 0
nometal drops metal to 0
control# Lets you to control a different skirmish AI.

Commander Build Other Buildings:
Click on a construction unit and push Enter. Then click on the commander and push Enter again. Commander now can build the building that construction unit can.

Campaign Cheat Code:
Click on Total Annihilation's Single Player icon.When the Single Player Game page appears type DRDEATH (it isn't case sensitive).This cause a Cavedog Entertainment bone to appear between the Load Game and Previous Menu icons on the right side of the screen.Clicking on the bone will take players to a special Play Any Game screen where they can play any Total Annihilation mission,even if they have not earned their way to that level yet.