As some of you may know, the original source code to the DOS version of Super 3D Noah's Ark was lost. The product released here is based on reverse engineering and reimplementation upon a modern rendition of the Wolfenstein 3D game engine. A buddy of mine NY00123, however, utilizing the research done for this port along with debugging symbols that he discovered were left in the original game executable managed to recreate the original source code for the game (modulo comments of course)!
For those interested, the source code can now be found in NY00123's repository on bitbucket:
https://bitbucket.org/NY00123/gamesrc-ver-recreation/overview
For more details see his announcement:
http://diehardwolfers.areyep.com/viewtopic.php?p=95950#95950
http://wolf3d.darkbb.com/t3302-wolf3d-sod-bstone-s3dna-exe-versions-restoration#28644
http://www.classicdosgames.com/forum/viewtopic.php?p=7312#p7312