Before Castle Wolfenstein
Prequel expands without addingMany people criticise Spear of Destiny just to be an expansion with more levels of Wolfenstein 3D, and while that might be correct, I can't see anything wrong with that since it's still a good game. Though the levels aren't as many as in the original (unless you have the "Lost Levels" edition) they are generally smaller and less cumbersome to navigate through, which is nice. Other than that, it pretty much uses the same mechanics, sprites and music.
Pros & Cons+ Solid prequel / expansion
+ No annoyingly large levels
- Doesn't really add anything new