KS Exclusives for Zombicide: Dark Side Kickstarter exclusive crossover set including a booklet featuring 10 new Missions that mix together elements from both the Invader and Dark Side boxes. These Missions also utilize a new game mechanic: Companions that will help the Survivors in their mission. Scientist Companions - Lukas Pavlis, Dr Markus de Vries & Olive Hayes (granting Survivors a different benefit.) Xenos - Extra Driller Abomination, 6x Driller Blitzers (6 cards), Alt Sculpts for Driller Xenos (8x workers, 4x tanks, 4x hunters. And, Operation Persephone, additional 10 missions combining Invader & Dark Side