Underground Mode is the Need for Speed: Underground equivalent to Career Mode.
Underground Mode is the career for Need for Speed: Underground. From here, the player can get access to races, customize their ride, and progress in Underground's story mode. In order to start another Underground Mode after completing it, the player will have to create a new profile.
If the player has already completed Underground Mode and accesses the option on the menu, they will get a message congratulating them on completing it and to make another profile in order to play it again.