Interesting. I’ve been playing around with Mom’s old computer lately, and I installed DOOM on it, of all things (it’s a 486, 25 Mhz, 4 MB RAM. Not much I can do with it). And to my surprise, I ran all the way through it to my great delight, though I must admit only on the medium difficulty setting, and including some level restarts.
There’s something about DOOM — it’s certainly a great program for short periods of time, when you just want to play a game but don’t have much time to spare. It manages to combine action with a nice touch of strategy; you can aim for a barrel and take out several clumped enemies at once, or get them to line up and take each other out. It’s just plain fun to play. But, of course, anyone who’s played it knows that.