Cities Skylines Board GameCities: Skylines " The Board Game is a co operative game based on the popular computer game of the same name by Paradox Interactive. Gameplay starts with four land boards being visible, the exact number varying depending on the scenario. The goal is to finish a number of milestones and to make the inhabitants of your city happy. At the start of each milestone, one additional board is bought, flipped over from its nature side to its developed side.