Beyond the Gates of Wolfenstein, sometimes mistakenly referred to as Beyond the Gates of Castle Wolfenstein, was the ninth mod by Wes Desjardins. It was made in collaboration with Alex Brosseau. Together, the two formed Alien Software.
It was a 2-level mod based on registered Wolfenstein. It was withdrawn in 2004. A small number of graphics were changed, but it is close in style to the original game.