"You remember a time before the world changed, a time of strange magics like horseless carriages, moving painting, and little boxes that could house whole worlds. Then they came and reality shifted, the old magics began to disappear to replaced by ones now that now seem familiar. A little of the old world remains, like your strange black wand that shoots out pieces of hot lead -- and has gotten you out of some tight situation...but will it be enough to save you from the monstrous hoards you now face?"
Caverns of Evil is an action roguelike that plays like a '90s first-person shooter, though with a few innovations and quirks of its own. Fight through ever-increasing hordes of monsters while the gathering ever more powerful weapons you'll need to survive.
This is a simple game, designed for some good old-fashioned violent fun. Play as long as you like and can stay alive, there are always more levels.