Doom, Duke Nukem 3D and Wolfenstein3D used to have a level complete screen where it listed how much you explored of the level, how many secrets you found, enemies killed and so forth.
Believe the original Metroid gave you a completion % after defeating Mother Brain.
The only one of those I got to play was Wolfenstein3D and I didn’t necessarily explore it much because I only got to play it thanks to a pretty awesome computers class teacher at my school.
Ok so edit the above
Back when I attended school in year 7-9 we would have the demo of Unreal Tournament 99 and Return to Castle Wolfenstein on the computers and sometimes after school we got access to the computer lab and I got to have my first multiplayer experiences there
Later in trade school, in network class, we would build a network during school hours and game AOE II on it after the lessons ended.
