download

Monte Vista is a world, not a game and therefore needs to be downloaded through the Sims 3 website and not Origin. You can redeem the code here ( https://store.thesims3.com/myAccount.html ) and then it should appear in your purchase history for download: https://store.thesims3.com/purchaseHistory.html

Also look here for further information: http://answers.ea.com/t5/The-Sims-3-Store/Guide-Sims-3-Store-Worlds/td-p/1589911 and here: http://answers.ea.com/t5/The-Sims-3/FAQ-The-Sims-3-Store/td-p/333394