I did install Windows on it briefly from what I recall but wasn't impressed, there wasn't much to do with it. Games would be pure DOS and for programming I'd use Borland Pascal so again DOS.
But as a gaming machine it ran anything I could throw at it at the time, which was 286-games actually. Without realizing I had the absolute best "286" machine I could have, for DOS gaming it is apparently much better to play them on a 386: (Why you don't want a vintage 286 PC -- but I like mine anyway): https://www.youtube.com/watch?v=Htbvm5_NZHc
I paid $99 for Coherent because Linux didn't support the fancy RLL hard drive in my work computer. Eventually Linux caught up (or I got a new computer) and Slackware replaced Coherent (for little things like X11, better networking etc.). Those were the days :)
I had a 386DX, 25 MHz with 4MB and ran Slackware 3.0 with kernel 1.2.13 on it. It worked pretty nicely for me, but I have to say that I spent most of my time on the console. X11 did run but it was too slow to be fun.
Once Linux stabilized, the writing was on the wall...