Command & Conquer: Red Alert 3 was noted for being the first RTS game to enable the campaigns to be played cooperatively online; others had only supported single player campaigns.
Command & Conquer: Red Alert 3 mempunyai catatan menjadi permainan RTS pertama yang memungkinkan “Campaigns” dimainkan kooperatif secara online; permainan lain hanya mendukung pemain solo dalam campaignnya.