Click on Store, then on My Store Account.
When your account is created, log in to it. For any Worlds or additional downloadable items, use. The Sims 3 base game, Expansion Packs and Stuff Packs need to be redeemed on Origin. You’ll need to register these on The Sims 3 website, or redeem your codes for them in Origin. I bought a disc copy of The Sims 3, or a The Sims 3 expansion or stuff pack on disc
Find out how to redeem your game code, download and install The Sims 3, its expansions, stuff packs and worlds.