It Came From Red Alert! was a secret campaign from Counterstrike taking place after the Allied victory over the Soviet Union.
When the Soviets were defeated, several unidentified animals came out of nowhere for the victorious Allies - Giant Ants. Field Commander A9 was given orders from Ben Carville on the pressure of Allied leaders to eliminate the ants, in spite of the latter's reluctance to believe in their existence. It was discovered that the ants came out of a deserted Soviet research laboratory somewhere in Europe and the commander was ordered by Greek officer Stavros to remove them.
The campaign can be played when the player holds down the Shift key while clicking on the speaker graphic in the main menu of the game. It is only available when the Counterstrike expansion pack is installed.
- The secret campaign's title is a reference to the 1989 video game It Came From the Desert, in which players battle a horde of giant ants.