[NoPiece]

Castle Wolfenstein in 1981, which was the first game to include digitized speech and an early example both of stealth gaming and of the World War II shooter.

It was also an early example of procedural generated levels. During startup, it would create and write the castle map layout to the floppy disk. If you wanted to replay the level, you could pull the disk out and add a write protect tab so it couldn’t be overwritten.

[alamortsubite]

It's a minor nitpick, but it's more accurate to say the game would create the room configurations on startup (inner walls, doors, enemy players, chests, stair locations, etc.); the castle map for each level was fixed (Beyond Castle Wolfenstein worked the same way). I still have the maps my brother and I drew to aid in our escapes!