This week a creator by the name of resistance-rat has released a project called The Mind of Evil; a 21 level game build on Spear of Destiny!
Screenshot from ModDB Profile
The game is built on Wolf4SDL and takes the player on an adventure connected to Episode 2 of Wolfenstein 3D, with a variety of map locations and some new features to alter gameplay.
The Mind of Evil does not require any additional files to run, and even comes with a Level Guide in case you get stuck.
Download The Mind of Evil (ModDB)