Like you, I was playing on the PC well before Wolf3d, Doom, Quake, etc came out.
Most current modern games (like the current iterations of Doom, Overwatch, etc.) are too flashy and have too many different colors, landscape and building details, and distractions for me to be able to focus well on the hunt.
I'd recommend TF2.Half-Life, HL2 (and episode 1 & 2) are good as well. Also Portal and Portal 2.All of them use older, more simple engines that won't support all of the flashy effects, and as a byproduct make it easier for me to understand what's going on around me. Plus, they work well and don't need cutting-edge PCs as well.
Now get off my lawn!