When it comes to modern city building simulators, there are very few titles which can compete with Cities: Skylines. Built as a spiritual successor to SimCity, Cities: Skylines has managed to go above and beyond the series it is based on – having now officially sold more than 12 million copies.
Making the announcement on Twitter, the official Cities: Skylines account said “City Builders! We're thrilled to celebrate this year's milestone of 12M copies sold & we're proud to be a market leader in the city-building genre, and we couldn't have done this without you! A huge thank you to all of our fans for your continual support!”