During the game press c, right, a, z, y, b, up, b, b, a. Then a new building will be available, after you build it a new unit will appear, the Visceroid.
Cheat
While playing press: abc,left,down,right,up,left,down,right,up and than a for nuke,b for ioncannon,or c for air strike.
Cheat
To get a nuke for free 0$ just press left down right up left down right up A to get an ion cannon without advanced communications just do the same as to doing a nuke exept press B at the end air strike is the same but with C at the end.
Easy Money
To get $5000 more cash. Go to the start menu and press right,left a,b,c,z,y,x,right,left.Now continuosly using this cheat, build a massive army and slaughter the enemy.
Extra units
With this cheat you will be able to build commandos, S.S.M. launchers and ch-47 "Chinhook". During the game and after you build the Advanced Communications Center press y, a, b, b, a, down, a, b, b, a, down, up, then build barracks to build commandos, a heli-pad to build ch-47s and a weapons factory to build the S.S.M. Launcher.
Laser Orcas
To be able to build laser orcas you must press, during the game, x, y, z, right, down, left, up, right, down, left, up, a.
Note: In all the cheats written by me be sure not to have assigned units to the x, y and z buttons.
Reveal Entire Map
During any mission just press: "Up, Down, Right, Left, A, Up, Down, Right, Left, A. Now you can see the enemy's base, backup tiberium and when they are attacking and from where.
Bio Lab...