Defend your cityBuild military facilities to be able to defend against enemy bombings. Increase the range of your defences so you can expand without fear of being destroyed by bombardment.\ Incremental bombardmentThe attacks will get stronger and stronger and you will need better defences if you don't want to lose parts of your city. New biome: MountainsFood is hard to come by in a frozen world. Give it a try! Although the snow will bring new tourism options, such as ski slopes.

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 "LIBRARY" tab and start downloading.