Unstable Unicorns Rainbow Apocalypse Expansion Pack is designed to be added to your Unstable Unicorns Card Game (or Unstable Unicorns NSFW Card Game). This pack includes cards ranging from super cute unicorns to the terrifyingly destructive Four Unicorns of the Apocalypse. Unstable Unicorns was one of Kickstarter's top 100 most backed projects of all time and won the 2019 Peoples Choice Award for Toy of the Year.