Operation: Nazi Slayer is a new Spear of Destiny mod by Orka, and is the latest to use the new LZWolf source port!
The game requires the full version of Spear of Destiny to run, and builds upon that base with new weapons, enemies and a complete new set of levels!
Coincidentally, this appears to have been released on the anniversary of Orka’s last mod, Wolfenstein: The Fourth Encounter.
Note: On some operating systems, there may be an error with the music (Which is created by Orka himself!). If that’s the case, AstroCreep has created a music patch to fix the problem. Download this and load it alongside the game, and the problem should go away. Also, the music is pretty good.