To redeem your keys for The Sims 3, Late Night Expansion Pack, and High End Loft Stuff please follow these simple instructions:
If you have not done so already, create your free Origin/EA account on www . origin . com
Log in to the Sims 3 community website using your Origin email and password. If you are logging in for the first time, use your provided key for the Sims 3 base game during the registration process.