According to SF Gate, the latest episode of MTV?s ?The Challenge: War of the Worlds? has become the highest-rated episode of the show since 2013. The episode received a 1.55 rating among adults under 50 across live viewing and three days of delayed playback. The second episode of ?War of the Worlds? is being considered the best-rated episode of the ?Challenge? franchise since 2013?s ?Rivals II? which first aired nearly 10 seasons ago.