Originally released on PC in 2015 by Colossal Order, the original Cities: Skylines and the 2023 release Cities: Skylines II have redefined the city-building simulation genre. To celebrate the eleventh anniversary of the series, Paradox Interactive has announced the release of new content for both games throughout March. This will include new content packs, radio stations, free updates, and a new expansion.

A series of festive events will kick off with free weekends on Steam, allowing newcomers to explore Cities: Skylines from March 5 to March 9.

On March 10, the release of Race Day, a brand-new expansion developed by Tantalus Media in close collaboration with Paradox Interactive, will take place. It will offer players the opportunity to transform the streets of their cities into thrilling racing tracks for cars, running, and cycling. Players can build their dream racing venues by designing tracks right in the city!

Also on March 10, additional content for Cities: Skylines will be released, including the Iconic Brutalism and Renewed History packs created by the player community.

Enhancing the atmosphere and details will be the new radio station 8 Gear Radio, along with a free update introducing roadside barriers and a new interface displaying population occupancy information, allowing deeper insights into the city's labor force data.

Cities: Skylines II will join the celebration on March 18, when two new packs from community members Office Evolution and City Stations, as well as two new radio stations Smooth Vibes FM and Skyrail Radio, will be released.

Moreover, following the first update released in February by Iceflake Studios, a special anniversary patch will be launched, adding the signature Iceflake Arena building, improving zoning, and fixing bugs.

The City Stations pack adds a range of new compact depots and train stations, stations with variable designs, and new landmarks. The Office Evolution pack reflects the architectural transition from classic facades to the elegance of modern office spaces. Finally, city residents will be able to dance to the rhythmic sounds of the soundtracks from the two new radio stations Smooth Vibes FM and Skyrail Radio.

More information about the Cities: Skylines series can be found on the official website.