Wolfenstein:
Wolfenstein 3D was released as shareware, which allowed it to be copied widely. The shareware release contains one episode, consisting of 10 missions (levels). The commercial release consists of three episodes including the shareware episode, and a mission pack called "The Nocturnal Missions". Like the shareware episode, each commercial episode contains 10 levels, bringing the game to a total of 60 missions.
Spear Of Destiny:
The game consists of one 21-level episode, 18 of which need to be completed in order to win the game
Lijkt mij dus dat Wolfenstein inderdaad een stuk groter was.