Colossal Order Oy (developer) / Paradox Interactive (publisher)

Colossal Order Oy is a Finnish game developer founded in 2009 and based in Tampere, best known for creating simulation and city-building games. Their early work includes the Cities in Motion series (focused on public transport simulation), and they gained worldwide recognition with Cities: Skylines (2015), a modern, moddable city-builder that became a major commercial and critical success. Colossal Order focuses on deep simulation systems, strong modding support, and post-release content support through expansions and updates.

Paradox Interactive is a Swedish game publisher and developer (founded in the late 1990s) known for strategy and simulation titles. Paradox published Cities: Skylines and has supported its distribution, marketing, and broader global platform presence. Paradox operates as both publisher and developer for a portfolio that includes grand strategy franchises and a number of third-party and in-house titles, with a strong community and support infrastructure for ongoi...