Let me start by saying I have over 100 hours logged on Cities: Skylines since I purchased it in June 2017. It is one on my favorite games to play and stream on Twitch.TV.
Cities: Skylines is basic at its core. It is a City builder much like Sim City, however, it is much more. You start by building roads and zoning property for residential, commercial, or industrial use. You then need to plan your education, health and death care, emergency services, waterworks, and city services like garbage collection, and public transit.
If you play the way the game is intended, you will have a budget, manage loans and taxes, and natural resources. You may also choose to focus strictly of designing and building by turning on unlimited money and resources. You may also choose to unlock all achievable items right of the start or earn them as you progress with population sizes. Cities: Skylines adapts to any gamer, whether looking for a challenge or to just play casually to unwind.
With the PC version, you can also experiment with community mods from the Steam Community. Mods include custom buildings like local staples and landmarks, and game mods to make the game easier such as auto demolish for abandoned buildings, and items. Downloadable Content (DLC) is also available for the PC version including Mass Transit, and Natural Disasters.
Cities: Skylines is available for Xbox One, PlayStation 4, and PC.