Real World/Road Rules Extreme Challenge is the fourth season of the MTV reality game show, The Challenge (at the time known as Real World/Road Rules Challenge). The season is directly subsequent to Real World/Road Rules Challenge 2000. Extreme Challenge is the first season that adorned the show with a subtitle, the series having begun a new trend of titling each season based on its format and theme. To date, it's also the only season in which the season title alters the show title, through the insertion of "Extreme" between "Real World/Road Rules" and "Challenge".