Need for Speed: Shift is the 13th installment of the long-running racing video game franchise Need for Speed; published by Electronic Arts. It was announced in December 2008 as part of a three-game announcement that includes Need for Speed: Nitro and Need for Speed: World. Shift was developed by Slightly Mad Studios in conjunction with EA Black Box and published for Electronic Arts. In the new franchising model for the series adopted by EA, Shift takes its place focusing on simulation/arcade racing rather than the arcade racing of previous titles in the series. According to EA, the game has sold 4 million copies on all platforms combined. Shift was commercially successful, and followed by a sequel, Shift 2: Unleashed, in 2011.