The Sims 3 is a 2009 strategic life simulation computer game developed by The Sims Studio and published by Electronic Arts. It is the sequel to the best-selling computer game, The Sims 2. It was first released on June 2, 2009 simultaneously for Mac OS X and Microsoft Windows - both versions on the same disc. The Sims 3 was released to home consoles on October 26, 2010, for PlayStation 3, Xbox 360, iOS, Android and Nintendo DS and later the Wii platform on November 15, 2010. The Windows Phone version was made available on the Windows Phone Marketplace on the 15th October 2010 for $6.99. There is also a Nintendo 3DS version, released on March 27, 2011, as one of its launch titles. It has also been released for mobile phone platforms, and a simpler version for mobiles with Java.

The Sims 3 was an instant success, selling 1.4 million copies in its first week. Critics issued mostly positive reviews. The Sims 3 gained an 86/100 score from aggregator Metacritic. The game has sold over ten million copies worldwide since its 2009 release, making it one of the best-selling computer games of all time.

The Sims is a strategic life-simulation video game developed by Maxis and published by Electronic Arts. Its development was led by game designer Will Wright, also known for developing SimCity. It is a simulation of the daily activities of one or more virtual persons ("Sims") in a suburban household near SimCity.

The Sims uses a combination of 3D and 2D graphics techniques. The Sims themselves are rendered as 3D objects, but the house, and all its objects, are pre-rendered, and displayed dimetrically.

While gameplay occurs in the game's Live mode, the player may enter Build mode or Buy mode to pause time and renovate the house or lot.

When the game begins, each family will start off with §20,000 Simoleons (regardless of its number of members). These funds can be used to purchase a small house or vacant lot on the Neighborhood screen. Once a lot is purchased, a house can be built or remodeled in Build mode, and/or purchase or move furniture in the Buy mode. All architectural features and furnishings customizable in the Build and Buy modes follow a square tile system in which items must be placed on a tile. Walls and fences go on the edge of a tile and can follow the edge of the tile or cross it, but furniture items cannot be placed on either side of a crossed tile. The base game contains over 150 items including furniture and architectural elements.