Buy Cities Skylines Content Creator Pack Railroads of Japan now! You will receive the key for the DLC by Paradox Interactive via eMail within the stated delivery time. With this Content Creator Pack, you can add unique new contents to Cities Skylines. Download Cities Skylines Content Creator Pack Railroads of Japan for free via the Steam network. Steam can be found here. The original game (not included in this offer) is required to use, respectively, play the contents of the DLC. This is an EU key that can only be used / activated within Europe.