Swedish Publisher Paradox Interactive and Finnish developer Colossal Order have announced that Cities: Skylines' newest expansion, Green Cities, is poised to hit PC, Mac, and Linux on October 19.

Priced at $12.99 USD, the expansion will add over 350 new assets to the core game, including a massive selection of new visual options, complete with eco-friendly buildings, organic stores, new parks and services, all at the mayor's disposal to finally rid the city of pollution once and for all.

With the expansion, players can completely embrace going green, and create more diversified cities with new specialization options for all zones, such as a combustion engine ban in the inner city or waste filtering requirements for industrial buildings.

New in-game services, scenarios, and policy options will all also arrive alongside revisions to noise and ground pollution.

As standard with Cities: Skylines' expansions, a free content update will release alongside the expansion, supplementing the base game with electric cars, road modding, a noise pollution overhaul, and more beautification options in the form of parks and trees, and other things to make your cities look more pretty.

There is currently no word on Green Cities coming to either the PS4 or Xbox One versions of the game. As of March (which notably excludes the PS4 and Xbox One release), the title has sold an impressive 3.5 million copies, making it Paradox Interactive's best-selling game ever.

Below, you can check out a new trailer which accompanied today's news: