* Mercenary: Escape from Targ (Novagen)
http://mercenarysite.free.fr/mercframes_graphic.htm
"open world" vector FPS/RPG, fully RAM-resident, in 48k & 64k editions.
* Alternate Reality: The City (Datasoft/Paradise Programming)
FRPG with 90-degree turns, rendered walls/doors as scaled textures between the animated backdrop and foreground NPC sprites.
I wrote an FAQ as a kid for Mercenary for local BBS' - I think I discovered at least 3 victory conditions. :^)