Cities Skylines 2: Synth & Steel Radio

The Synth & Steel Radio DLC was developed and published by Paradox Interactive, and was released on 3 December 2025. As with other music‑station add-ons for Cities: Skylines II, it requires ownership of the base game to function. The DLC is available for the same platform as the main game (PC).

Synth & Steel Radio adds a new in‑game radio station that delivers a soundtrack blending analog synth music with raw, industrial‑style acoustic textures. The offering includes 60 minutes of music, consisting of 16 music tracks and 13 DJ voice tracks. It is designed to evoke a gritty, mechanical mood — intended especially to accompany industrial or modern city builds, giving players a sonic backdrop that matches themes of manufacturing, progress, and urban grit. The DLC is also explicitly promoted as complementary to industrial‑themed packs such as the Supply Chains Creator Pack, encouraging players to pair the audio atmosphere with relevant building content.

When promoting Synth & Steel Radio, Paradox Interactive presented it as a way to “fuel your city build” with a distinctive music atmosphere that matches the urban-industrial vibe. The marketing emphasized the station’s tone as mechanical and melodic, aiming to inspire players designing manufacturing districts, industrial zones or gritty, modern megacities. The announcement framed the radio station as a useful creative tool to deepen immersion and link city aesthetics with sound.

As the release is very recent, there are no formal Steam user reviews yet. Early conversations in community forums among players show cautious optimism: many build‑style city‑builders express appreciation for having a fresh audio option beyond the game’s default soundtrack — especially those who enjoy crafting industrial or modern‑style cities — as they feel the darker, synth‑driven music complements that aesthetic better than the lighter or generic ambient tracks. Some players note that a strong soundtrack can improve immersion significantly, though a few remain skeptical whether a radio station alone justifies a DLC purchase unless they are regularly building themed, stylised cities. Overall, early community sentiment suggests that Synth & Steel Radio is viewed as a useful, atmospheric enhancement for players focused on creative city design.