It’s not enough to simply connect one side of town to another - traffic needs to flow smoothly, which is not always a simple prospect. Roads are hands down one of the toughest parts of building a good town in Cities: Skylines. Also, there’s the issue of road layouts, the bane of every desktop civil engineer. There’s also a heavy dose of infrastructure oversight in the form of the placement of schools, hospitals, fire departments, and police stations. All the hallmarks of a good city builder are here, from district zoning, to power grid, and utilities management. Cities: Skylines is an incredibly robust and complicated city-management sim that fulfilled the dreams of prospective city planners worldwide upon its 2015 release.