I wonder how practical it would be to create a Wolfenstein 2D with the same level design, but played in top-down view.
cough
Castle Wolfenstein, by Silas Warner for MUSE
kids: get off my lawn
This is where it all started:
kids: get off my lawn
the grenade explosion was the most satisfying ever. "Take that Nazi scum!"
the 1st Rogue-like I ever made was something I called WolfenHack. my personal cross between Castle Wolfenstein and NetHack. I later genericized my engine and built a zombie apocalypse on top of it.