Wolfram
A remake Of Wolfenstein 3D
Dissatisfied with other attempts at transmuting arguably the shooter genre’s most classic title, developer Chain Studios took it upon itself to create its own tribute to id Software’s Wolfenstein 3D. Over the course of four months Chain built, from scratch, the entire first episode of the game using its own “Volatile3D II” engine. Now, you can play it.
http://www.kotaku.com.au/2012/06/play-wolfram-a-quality-true-to-the-source-remake-of-wolfenstein-3d/