Astrostein is a mod for registered Wolfenstein, made by Bruce Ryder. It was released on October 2, 1996.
The set is based on the original Mac scenario, which was created by Laz Rojas for WolfAddict Software. This scenario was unfortunately never completed. Ryder's mod features 3 new levels, all found on Episode 1. The overall theme is set in space, and uses futuristic graphics with not many original Wolfenstein 3D graphics being present.