Raycasting Game Maker 4.4x — (5.5 Mb)
Description:
"The Raycasting Game Maker (RGM) is a free, easy to use game editor that creates simple raycasting games in the style of Wolf3D."
The Game Maker works. Import additional texture bitmaps for more complex projects.
Website:
http://www.bithandler.homepage.bluewin.ch/
Download Page:
http://www.bithandler.homepage.bluewin.ch/indexrgm.html
Forum (with links to RGM downloads):
http://www.freeforum101.com/rgm/