Enter the mysterious town of Moonlight Falls where strange things happen by the light of the moon. Create supernatural beings from menacing werewolves and cackling witches, to mischievous fairies and more intriguing vampires. Then stalk the night, use your wand to cast spells, or just stay home and claw the furniture and more. You can mix dozens of elixirs from turning Sims into zombies to transforming them into gold. Spooky surprises are in store for you in the world of The Sims 3 Supernatural!Go to: http://www.origin.com/us/about
Click “Download Origin” (from the upper left corner)
Login into downloaded application
Install and start application, login with your Account name and Password
(create one here: http://store.origin.com/ if you don’t have).
Redeem Product Code
From the “Origin” drop-down menu (upper right corner) choose “Redeem Product Code…”,
enter your code and click “Next”.
Download your Game
After successful code verification go to the “MY GAMES” tab and start downloading.