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Put the power of world creation into your hands! Create and share unique new worlds that you design with The Sims 3 Create a World Tool – BETA. Download for free and step into the shoes of The Sims 3 development team by using the same tools the team uses to create worlds and towns for The Sims 3. Design and build entire worlds for your Sims, or begin your creations with pre-made Sunset Valley or Riverview terrains. Expand your creativity, and share your creations online through The Sims 3 Exchange.