Teppic said:I'm still looking for an old 3D shooter game in DOS, where you could find secret passages like in DOOM and Wolfenstein 3D. It's not any of the well known games like Heretic or Rise of the Triad. I think you came across some old prisoners in chains along the way, but I'm not sure that's the same 3D game I'm thinking of.
Just going to rattle off some of the more obscure FPSes from the era, see if any of these ring any bells:
If we're talking a Wolfenstein-style engine (strictly grid-based, square walls):
Catacombs?
Ken's Labyrinth?
Blake Stone: Aliens of Gold?
If we're talking a more Doomesque engine (elevation, non-orthogonal walls)
Strife?
Shadow Warrior?
Blood?
Edit: Probably should have read on before answering!