In addition to the core game, two expansion packs are included in the main box: the Luke Skywalker and Darth Vader Ally and Villain Packs. Teams for skirmish are constructed ahead of time, similar to the Star Wars: X-Wing Miniatures Game, and each session is self-contained.
Skirmish mode is playable for two players, typically with one playing as the Imperial forces and one as the Rebel forces, but same-team matchups are possible. Both sides will progress over the course of many missions and play sessions. The campaign game can be played by two-to-five players and features one player as the Imperial force, while up to four other players control unique Rebel heroes. Decem Star Wars: Imperial Assault is a strategy board game produced by Fantasy Flight Games and released on December 15, 2014.