This is an expansion and requires the base game to play: yes

Smash Up: Cease and Desist can be played on its own as a two-player game or combined with other Smash Up titles to allow for up to four players to compete for control of bases at the same time.

Smash Up: Cease and Desist includes four factions — Astroknights, Changerbots, Star Roamers, and Ignobles — with 22 cards for each faction. To play, you shuffle together any two factions, whether from this set or any other Smash Up title, then start playing.