Warp is OS/2v3. You couldn't use it on a 286, but if you had, say, a 486/33 -- do pardon me for mentioning a nine-year-old part -- it would begin to be worth playing with. My copy of Warp is still very much to hand, and I think anyone who can scrounge up an appropriate computer should run it (for a while) if they have the opportunity, because it's a real education.