C.I.F.S., or Communist Invaders From Space is a new hack for the 2600 from Scott Dayton. Vaporize the Mutant Warriors before they overrun your Home Planet! The Evil Ruler of the planet Rooskee has launched a diabolical attack. A cunning Mother Creature, filled with irradiated vodka, transforms helpless slaves captured on peaceful planets into bloodthirsty Communist Mutants!
The game merges the gameplay of Space Invaders with the graphics from Communist Mutants from Space (the Supercharger title for the 2600).