Unlike the original game, "Beyond Castle Wolfenstein" was originally developed simultaneously for both the Apple II and the Commodore 64, but was quickly ported to DOS and the Atari 8-bit.
Игра «Beyond Castle Wolfenstein» была разработана одновременно для платформ Apple II и Commodore 64 и вышла в 1984 году, а вслед за тем портирована на платформы DOS и Atari.