These are a little more interesting than the 3DO Escape from Monster Manor dev playthrough lol
I like in both of them though when the guy who made the level doesn't remember something like how to get out of a room 20 years later after showing every other little secret or weird flaw like a wrong texture or something.

They should have him play Chex Quest. I would pay money for that maybe.
EDIT: The intercuts of shots of the editors or what John's discussing regarding Wolf or Quake or some mods or whatever is a really nice thing to do in videos like this.
EDIT2: Showing how BSP works as he talks about it.
