Paradox Interactive, a publisher of games that are playable at all hours, today released “After Dark,” the first expansion for the smash hit city-building game Cities: Skylines from Colossal Order. Available today for PC, Mac, and Linux, After Dark adds a broad variety of game-changing features to Cities: Skylines, focused primarily on the way in-game cities will behave during the game’s new day-and-night cycle. In addition, all players of Cities: Skylines will receive the new day-and-night cycle as an update to their game today, whether they have purchased After Dark or not.

Take a friendly tour of After Dark’s features in a new trailer.

In After Dark, players of Cities: Skylines will meet all-new challenges in planning, maintaining, and expanding their cities, as they discover the unique needs and quirks of the populace after the sun goes down. In-game citizens will seek out entertainment and leisure once the work day is over, while the criminal element will also become more active, requiring new strategies and solutions for a city’s services, traffic, and tourism. After Dark includes: