Escape! is is a 1978 game from Silas Warner and one of the first, if not the first 3D games, which many consider a precursor and influence his later game Castle Wolfenstein. It also likely influenced the the name of the first campaign of Wolfenstein 3D: "Escape from Castle Wolfenstein" and the name of the first mission in RTCW: Escape!).
The concept was that the player was trapped in a building, represented by a 3D maze (much like the ones later appear in Wolfenstein 3D) and has to find a way out. The player only has a 'pass' which he uses to get past 'guards/people along the way. Some of the guards always tell the truth, some always tell lies, and some may do either one.
Escape (1978) First 3D game for home computers!
Castle Wolfenstein and Beyond Castle Wolfenstein became top-down maze games, but kept the ideas of passes or disguises to get past guards. While Wolfenstein 3D dropped the stealth/adventure approach for pure run and gun mechanics (though there were plans to incorporate those features, as well as surrendering enemies before they were dropped).