A circuit race with a Honda Civic Si Coupe, PC version.
Circuit is a standard race that involves racing with up to three opponents' cars around a loop track for two or more laps. It is the main mode of the game.
Knockout Mode is similar to previous Need for Speed titles. It is played on the circuit tracks, and involves "knocking out" the last racer who passes the finish line in each lap until the final leader of the race remains, and wins the race. In Underground, Knockout sessions have a maximum of three laps for four racers.
Sprint mode is a variation on the Circuit mode, where the contestants race in a point-to-point track instead of loop tracks. These races are typically shorter than "circuits" (with a maximum of 8 km in length), so players are required to be more cautious of any mistakes during racing, such as crashing into barriers or vehicles.
Drifting is the most challenging and technical aspect of the game. Drift mode consists of one player in a short loop track, where the objective is to collect as many points as possible by drifting along the track. The player competes with three other contestants, who appear to accumulate scores along with the player during the drift session. The player would be required to beat these scores in order to obtain top positions.
Bonuses are awarded for players who drift in the outer borders of the track, drift vertically, or perform chained-drifting (continuous drifting by constantly steering the vehicle during drifts to maintain speed); if the player succeeds in ending a drift without collisions onto the sides of the track, the collected points are added into the score, otherwise, the collected points are cancelled.
Drift mode is the only type of racing where time taken to complete the track does not matter, since players are given the freedom to complete the allocated number of laps at their own pace. There is no nitrous oxide in this mode.
Drag racing is the second most technical form of race in the game. It involves racing against one or three cars on typically straight tracks and attempting to obtain top positions to win. In order to master Drag mode, players must employ good timing and reflexes for gear shifting, redlining, overtaking, and the use of nitrous oxide boosts. Since players must use manual transmission, drag races place particular emphasis in monitoring the tachometer and the engine temperature during races, which is enlarged and displayed on the left side of the screen. Steering in this mode is simplified to simply allow for lane changes, while the computer handles the steering along the lanes, and the player focuses more on maintaining an optimum speed for the car.
Two conditions will result in players being forfeited during a drag race: head-on collisions with an opponent, barriers, traffic cars or dividers (being 'totaled'); or blown engines as a result from prolonged redlining and the subsequent overheating of the engine.
