Total Annihilation is a futuristic real-time strategy game for Microsoft Windows and Mac OS, created by Chris Taylor and Cavedog Entertainment and released on 30 September 1997 by GT Interactive. It was the first to feature 3D units and terrain, a significant achievement in the days before graphics cards with hardware-based 3D acceleration became commonplace. Two expansion packs were released, The Core Contingency on April 30, 1998 and Battle Tactics on June 30, 1998.

A remake of the game with a completely 3D graphics engine (lacking any fixated camera angle), named Spring, has been created by the Swedish Yankspankers. Total Annihilation creator Chris Taylor has also recently created the game Supreme Commander through Gas Powered Games, which bears many similarities with Total Annihilation, and has been popularly considered as its "spiritual successor".
(Wikipedia)

CHEATS

Begin a game in skirmish or multiplayer mode. Press Enter to display the message box. Press Plus and enter one of the following codes. Press Enter to activate the corresponding cheat function. Please note: You will have to enter the code again to deactivate.

Codes

Increase metal and energy by 1000 - atm

Display game clock - clock

Play CD music - cdstart or cdplay

Stop CD music - cdstop

View 3D contour mesh - contour(1-15)

Control skirmish AI - control(0-3)

Dithering replaces gray line of sight - dither

Double weapon damage - doubleshot

Half weapon damage - halfshot

Lost game - ilose

Win game - iwin

Kill all units - kill

Darker structures light - 1000

Black structures - light

Meteor shower at random map location - meteor

Decrease energy - noenergy

Decrease metal - nometal

Disable explosion screen effect - noshake

Full map, disable line of sight - nowisee or los

Full radar - radar

Full health - dr

Toggle object shadowing - shadow

Units sing when highlighted - sing

Toggle 3D sound - sound3d

Press Alt + (number) to switch units - switchalt

View opponent's energy, metal - view (0-3)

Share radar* - share radar

Share metal* - share metal

Share energy* - share energy

Share all resources* - share all

Also shoot buildings - shootall

Traces unit/structures in order that they were built - bigbrother

Display data transfer in multi-player mode - bps

Change opponent color in skirmish - logo (1-9)

Cover the screen in black - mapping

Display ranges by holding Shift when pointer is over unit - showranges

All trees killed off - treedeath

Toggle chat text in multi-player mode - screenchat

Faster unit building - zipper

Toggle radar mini-map - seti

Toggle sound effects - sfx

Limited resource increase - lushee

Map screen shot in .BMP format - makeposter

Change scroll speed; 100 is fast - scrollspeed (number)

Kill all enemy units - combustion

Toggles multiplayer compression - compressionturns

Change screen gamma - gamma (0-20)

Units honk when they stop - honk

Minimum energy sharing level - setshareenergy (number)

Minimum metal sharing level - setsharemetal (number)

Toggle energy sharing with allies - shareenergy

Toggle map info sharing with allies - sharemapping

Toggle metal sharing with allies - sharemetal

Toggle anti-aliasing - antialias

Building occurs at twice normal speed - nanolathing

Remove feature shadows - fshadow

Change type of CD music - musicmode

*Multi-player mode only.


Here is the intro video: