This is a client from EA which you can manager all your game like Steam Client .
1- Download Origin - EA Downloader :
3- Login Screen look like that :
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4- Login if you have account if not create new one FOR FREE .
5- After login you will see screen like that , follow red square :
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6- Type your key game which you bought from us :
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7- The game have already actived with your origin account :
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8- Click to My Game Librady
9- Click to game need to download: