Die Singleplayer-Demo zu Command & Conquer: Alarmstufe Rot 3 beinhaltet drei Tutorials und zwei Kampagnen-Missionen (Alliierte und Sowjets) sowie die insgesamt sieben Minuten langen Eröffnungsvideos:
- Krasna-45: Circus of Treachery: The second mission of the Soviet campaign, players will immediately be introduced to battling the series' newest faction, the Empire of the Rising Sun, escorting the Soviet's commando Natasha to a launch facility, protecting her from the Imperial ambush division waiting to attack.
- Heidelberg: The Famous Liberation: Players will then switch their attention over to the Allied cause, in the third mission in the Allied campaign, teaming up with an in-game Co-Commander to take out the Soviet's powerful Iron Curtain and headquarters in Germany.