Planet Hot Wheels was a massively multiplayer online racing game created by Hot Wheels' developers and Mattel, Hot Wheels' parent company. However, in 2004, after displaying a message on the site for nearly a year that Planet Hot Wheels would be back soon, Hot Wheels permanently removed the game from the website with no warning issued to its players. Many Hot Wheels fans played the game and speculations have been made on why the game was removed, but Mattel has not made any official statements.