Cities in Motion: Ulm is a new addition to the city-based mass transportation simulation game Cities in Motion. Build your mass transit empire in the sandbox set from 1970's to 2030. Experience a real-time city and traffic simulator as each location's bustling population commutes between their homes, jobs, and leisure sites. The Ulm expansion includes a new city with an additional scenario and a unique landmark from this fascinatingly iconic German landscape.Go to: http://store.steampowered.com/ and download STEAM client
Click “Install Steam” (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don’t have).
Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.
After successful code verification go to the “MY GAMES” tab and start downloading.