Simcity Digital Download Price Comparison
For Origin Platform: Origin CD Keys, you have to download and install the Origin Software first from HERE) then you can activate the game on it. Once installed, start Origin, click on the Origin Tab and click on Redeem Product Code and just enter the key. The game will appear in your My games list.
Russian version. On some games, you must patch the game with a language pack. Read the store's description carefully, all the steps are explained.
English Language only version. On some games, you must install languages packs. The stores will tell you if it's necessary or not, and explain all the steps if it is, please read carefully the store's description.
For Steam Platform: Steam CD Key (Region Free / Worldwide), you must download and register the code on the Steam Client, you can Download it (HERE). Then once you login, click Add a Game (located in the bottom Left corner) -> Activate a Product on Steam. There type in your CD Key and the game will be activated and added to your Steam account game library.