"The PlayStation Portable, Nintendo DS and Game Boy Advance versions of the game are called Need for Speed Carbon: Own the City, set in a fictional city named Coast City with a significantly different storyline and also featuring different AI teammate abilities. In 2009, a version of Own the City was also released on the Zeebo as pre-installed game, though it was marketed as the original Need for Speed: Carbon, creating some confusion as to which version was in fact released."
Source: Wikipedia, "Need_for_Speed_Carbon:_Own_the_City," available under the CC-BY-SA License.