The Sims 3 base game and its 11 expansion packs are not officially free, you can find a wealth of updated free content and significant discounts to complete your collection. Officially, the base game and packs are available through platforms like Free Content & Store Items

• 21 Expansion Packs: From the supernatural thrills of Late Night to the global adventures of World Adventures.
• 9 Stuff Packs: Deck out your Sims' homes with High-End Loft items, Fast Lane cars, and more.
• Base Game: The core experience fully integrated.

1. Dining Out (June 2010): Adds new restaurants, food, and dining options.
2. Hitchhiker (February 2011): Introduces a hitchhiking gameplay mechanic and new cars.
3. Mischief (September 2011): Adds new prank items and social interactions.
4. Katy Perry Sweet Treats (October 2012): A collaboration with Katy Perry, adding new items and treats.
5. Supernatural Stuff (September 2012): Adds new supernatural-themed items and clothing.
6. The Sims 3 Store Exclusive Pack (2012): A pack containing exclusive content available only on the Sims 3 Store.
7. Dance Party (February 2013): Adds new dance moves and party-themed items.
8. The Sims 3 70s, 80s, & 90s Inspired Stuff (June 2013): A pack featuring retro-themed clothing and items.
9. The Sims 3 Outdoor Retreat (January 2014): Adds new outdoor-themed items and activities.

Method A: The EA App Migration Glitch

Between 2012 and 2018, EA gave away The Sims 3 base game and several EPs for free via Origin (now EA App). If you have an old account from that era, check your library.

1. Dawn Trails (February 2010): Adds new outdoor activities, such as hiking and horseback riding.
2. Deluxe (June 2010): Includes new items and content from previous packs.
3. Luxury Party (February 2011): Adds new party-themed items and gameplay mechanics.
4. Picnic (July 2011): Introduces new outdoor picnic-themed items and activities.
5. Katy Perry Sweet Treats (October 2011): Adds Katy Perry-themed items and treats.
6. Graffiti (December 2011): Introduces graffiti and urban art elements to the game.
7. The Sims 3 Store Exclusive Pack (February 2012): Offers exclusive items and content.
8. The Sims 3 Stuff Pack (June 2012): Includes a range of new items and gameplay mechanics.