You can activate some fun extras in the multiplayer mode by pressing F8 to bring up the command menu and typing ''extras fnkgrrm'' (''extras quantifigon'' in the unpatched version). A message should appear saying, ''Extras ENABLED!'' Now hold down the Alt key while clicking on the character or vehicle buttons to bring up the extras (but there are no menu pictures for them). Extras do not work in laddered games.
Note: Some of the Nod extra characters are mutants. They regain health while they are standing on Tiberium or being hit by Tiberium-based weapons.
Yes there is a spike thingy.