El Castillo del Terror is a professional wrestling event produced and scripted annually by the lucha Libre promotion International Wrestling Revolution Group (IWRG). The event was established in 2000 and is held in November each year in Arena Naucalpan, IWRG's main arena in Naucalpan, State of Mexico. The annual show features the eponymous main event match; a multi-man Steel Cage Match where the last man in the cage is forced to unmask under Luchas de Apuestas, or "Bet rules". In rival Mexican promotion Consejo Mundial de Lucha Libre (CMLL) the match is referred to as Infierno en el Ring, but is the same concept. The 2015 event marked the fifteenth time that IWRG has held a Castillo del Terror event and the fourth time that Golden Magic has won the mask of an opponent by being the last man to escape the cage; unmasking King Drako, Alan Extreme, Kenshin Kabuki and El Golpelador.

El Castillo del Terror (2010) was a professional wrestling event, the fifth annual El Castillo del Terror event, produced by the International Wrestling Revolution Group (IWRG). IWRG has held an Castillo del Terror branded show since 2005, usually late in the year, making this year's event the fifth overall event in the series. The event took place on November 1, 2009, at Arena Naucalpan in Naucalpan, State of Mexico, IWRG's main arena. The main event was the eponymous Castillo del Terror Steel cage match where the last person eliminated was forced to unmasked per the match stipulation. In the end the ten-man match saw Oficial 911 defeat Yack, forcing him to unmask after the match.