'90s Doom rival Witchaven is being pulled from Steam soon, but it's under $1 if you're quick

Doom and Quake were the heavy hitters among '90s FPS games, although I'm sure most know the likes of Duke Nukem 3D as well. Aficionados will remember other names: Heretic, Hexen, Blood, and so on. Unless you were there at the time, however, you might have missed Witchaven and its sequel. If you wanted to catch up on the Capstone Software classics, both have been available on Steam courtesy of publisher SNEG for several years - but they'll soon be going away. The good news is that you can grab them at less than a dollar each before they do.