On the front of the dark side box, look through the window of the Imperial Throne Room, with symbols of the Galactic Empire and First Order on each corner.
Both decks feature the same set of 12 court cards, representing each side. On the dark side, Palpatine is depicted alongside Kylo Ren and Darth Vader - with a graphite grey back design.
On the King of Spades, Darth Vader is depicted holding his lightsaber while taking command of his Imperial subordinates.