More like insanely cheesy savescummer

Can someone explain exactly what kind of creature the Time Judge is? Why is it called the Time Judge anyway?

joke

Imagine this situation: You own a special nuke proof bunker. If a nuclear war starts everybody outside this bunker will die. In your bunker you have enough electricity, food and water for the rest of your life. Also there is an old PC with a 300MHz CPU. All of a sudden a nuclear war starts and all the superpowers launch their ICBMs at each other. So you know that the world will end in 10 minutes. If you have a family, friends or neighbors all of them are on a vacation and you can not save them. So you on...

I am somewhat familiar with retro shooters, having played Quake 1 + 2, Duke 3D, Blood, Shadow Warrior, Doom 1 + 2 (ofc). It took me a bit to warm up to this one, but I like it in the end. I think it's neat. The problem is, now that I have played through it a couple of times, I don't know what to play next. Are there other lesser known retro FPS games that I should play? Any recommendations?...