Electronic Arts released The Sims 2 on September 14, 2004. The sequel, developed by Maxis, takes place in a full 3D environment as opposed to the dimetric projection of the original game. Sims also age through six life stages from infancy to old age and subsequent death. Another major feature is the aspiration system. Each sim exhibits wants and fears according to their aspiration and personality. Consequently, the level of the aspiration meter determines the effectiveness of a sim at completing tasks. Aspiration points are acquired through the fulfillment of wants, which could, in turn, be used to purchase aspiration rewards. In addition, the game features clear days of the week with weekends when children can stay home from school, vacation days when adults can take time off work.
The Sims 2 is set some 25 years after the original game. For instance, the Goth family has aged significantly with Bella Goth mysteriously vanishing in the 25-year period. Because the entire game has progressed from 2D sprites to 3D models, all content in The Sims 2 had to be created from the ground up. Due to this, The Sims 2 was not made backwards-compatible with any content from the first generation of the main series. However, some objects and features from the original series were remade for this sequel.
Electronic Arts released eight expansion packs and nine stuff packs for The Sims 2. Over 400 exclusive items were also released for this game via The Sims 2 Store. In addition, exclusive items including pre-order items were released over the life cycle of this generation. All of these releases constitute the second generation of the main series.
The Sims Studio was created in 2006, and between then and 2008 the development of the franchise was slowly handed over to the new studio from Maxis, with the former studio now focusing its resources on its next project — Spore.[citation needed]