I love the old-skool corridor and maze-like shooters. id Software were the kings (naturally, given they defined the genre) of these games. I played through Wolfenstein, Doom, Doom 2, Quake and Quake 2 and loved them all.
I, too, made a Quake inspired shooter and it's good to see that I'm not the only one inspired by what we had in the 90's!
