🛠️ Cities: Skylinesのアップデート履歴
開発元がSteamで公開した公式告知（パッチ、新コンテンツ、イベント）を時系列でまとめています。タイトルをクリックすると全文を読めます。
2026年10月
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10/15木📢 お知らせEstates & Escapes Delay Announcement
Hello Mayors!We have decided that we need to delay the release of Estates & Escapes for Cities: Skylines. We encountered some technical issues with the upcoming base game patch that we will address be…
2026年3月
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3/10火📢 お知らせRace Day, Iconic Brutalism, and Renewed History is live!
The wait is over, mayors. The anniversary content for Cities: Skylines is live now.Starting today, you can hit the streets with Race Day, the brand-new expansion developed by Tantalus Media. Build ded…
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3/9月📢 お知らせDev Diary - Iconic Brutalism by Cristolisto
Howdy y’all! My name is Cristolisto, and I'd like to welcome you to my developer diary, where I'll be sharing insights into the creation of my content creator pack: Iconic Brutalism.Since November 201…
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3/7土📢 お知らせDev Diary - Renewed Cities by Brum
Hello everyone!Welcome to my Developer Diary about the Content Creator Pack: Renewed Cities for Cities: Skylines. First of all, let me introduce myself: I’m Brum, a Brazilian architect and designer pa…
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3/6金📢 お知らせCities: Skylines is Free to Play!
Cities: Skylines is Free to Play!For a limited time, Cities: Skylines is free to play for the whole weekend! Whether you’ve been watching from the sidelines or meant to revisit your grandest metropoli…
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3/4水📢 お知らせDev Diary - Race Day #2: Parades and other Races
Welcome back, mayors! Time for the second Race Day Dev Diary from Tantalus! Today, we pull our motor race cars into the pit lane and cover the other types of events that can be held using the new Race…
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3/3火📢 お知らせDev Diary - Race Day #1 - Races
Hello from Tantalus Media! We’ve been making the console ports of Cities: Skylines that were first released on Xbox One and PlayStation 4 back in 2017. Since then, we made the Remastered Editions for …
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3/2月📢 お知らせLower Subscription Prices!
Take your city-building to the next level with unlimited access to everything Cities: Skylines has to offer. The Expansion Subscription grants you instant access to all released DLCs, every new Expans…
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3/2月📢 お知らせHappy Birthday, Cities: Skylines!
A word from The Cities TeamEleven years of city-building, creativity, and a community that keeps raising the skyline.This month, Cities: Skylines turns 11. What started with a handful of carefully pla…
2025年10月
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10/30木📢 お知らせGet your very own Captain Chirper!
While we made this with the new Bridges & Ports DLC for Cities: Skylines II in mind, we have to recognize the original game when it comes to this iconic blue bird!Chirper has put on their captain's ha…
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