Daggerfall 

Go to the daggerfall dir on your Hard Drive, 
find a file called Z.cfg open it up and add the line: cheatmode 1

---
Verified:

Now start up the game, while in a dungeon hit ctrl and F4 to 
toggle 'god mode'. Alt and F11 will put you bacl on the last 
thing you were standing on , if you fall into the 'void' and can't
get out, (you may have to hit this key combo a few times)

---
unverified but listed:

Ctrl F1 -activates all maps, not sure exactly what this one 
does or means.

[ and ] cycle through quest locations. gain I hhave'nt verified 
this one yet.