The game sold 4.5 million units within its first year , and 7 million by October 2006 .
The Sims 2 was an instant commercial success , selling a then - record one million copies in its first ten days .
The game sold 4.5 million units within Sims 2 's first year , and 7 million by October 2006 .
The Sims 2 was an instant commercial success , selling a then - record one million copies in its first ten days .