Alex Kidd in the Enchanted Castle (アレックスキッド 天空魔城 Arekkusu Kiddo Tenkū Majō) is a side-scrolling platform game developed and published by Sega for the Sega Genesis video game console. The game was released in Japan in February 1989, in the U.S. in March 1991 and in Europe on November 1990. It is the only 16-bit platform game starring Alex Kidd, and the fifth game in the Alex Kidd series of video games.