World in Conflict: Soviet Assault is a 2009 expansion pack developed by Massive Entertainment and Swordfish Studios for the 2007 real-time tactics video game World in Conflict. It features the ability to play as the Soviet Union in the single player campaign, against which the player fought in the original World in Conflict as well as adding additional multiplayer maps.
The game is set in an alternate 1989 in which the Politburo of the Soviet Union elects to take military action to sustain itself, rather than collapse. Failing to achieve aid diplomatically, the Soviet Union invades Western Europe and the Pacific Northwest region of the United States. However, in addition to the standard US campaign, the player also assumes the role of Romanov, a lieutenant in the Soviet Army under the command of Colonel Vladimir Orlovsky. Orlovsky also commands two other subordinates in his battalion; his nephew Captain Nikolai Malashenko and old friend Major Valeriy Lebedjev, a KGB officer attached to the battalion. The expansion adds a total of six Soviet missions interspersed between the original game’s missions, thus completing the story and acting as an update for the campaign while retaining the original game’s units and features.
World in Conflict: Soviet Assault offers multiplayer functionality, supporting up to 16 players online or over LAN. The official Massgate servers were shut down by Ubisoft in December 2015. However, in 2017, the player community restored online multiplayer functionality through an unaffiliated version of Massgate.