The game’s graphics and sound design were also praised for their realism. The game’s visuals were stunning, with detailed car models and environments. The sound design was also impressive, with realistic engine sounds and a pulsating soundtrack.

The game’s influence can also be seen in subsequent Need for Speed titles. The series continued to focus on street racing and customization, with games like Need for Speed: Most Wanted and Need for Speed: ProStreet building on the foundations laid by Underground.

The game’s underground scene was a key part of its appeal. Players could participate in various racing events, including sprint races, circuit races, and drift events. The game’s AI was also improved, with more realistic opponent behavior and challenging racing lines.