I recently bought a copy of Heroes of Might and Magic III (1999) when it was on sale at Good Old Games. I was a little surprised to find it works almost flawlessly on my GNU/Linux machine using Wine. (I also installed an unofficial HD mod to make it run in bigger resolutions.)
Back in the 90s, I had a copy of Heroes of Might and Magic II. I recall it was probably one of the first games I bought after my family got a new Pentium computer. It was a cool fantasy strategy game, with pretty graphics and great music. Right up my proverbial alley at the time. Before that I'd been playing Master of Magic a little, but Heroes' more polished, modern aesthetics, and perhaps also the slightly more streamlined mechanics, quickly won me over.
But I was never very good at it, or should I rather say not patient enough. I never got very far in the campaign, mostly playing single scenarios on easy difficulty settings and sometimes hot-seat multiplayer with friends. (I never was very patient with games back then—I hardly ever 'beat' games until a little later when I got into more story-driven stuff, like JRPGs...) Even so, I might go as far as saying that Heroes II is the game I remember most fondly from the 90s (together with TIE Fighter).
So, I started up Heroes III, and I felt right at home. Even though I didn't play it back in the day, the game's similar enough to it's predecessor to feel instantly familiar and intuitive. I still love the aesthetics and feel of the game, so many years later. I started up a scenario, played it for several hours... and then I drifted off to other things and haven't been back since. Yup, that sounds very familiar as well.
It's a problem I've had with many classic games, and perhaps particularly strategy games. There would be a ton of content to play through in Heroes III (the GOG version includes the two expansions as well). But alas, it seems more like an itch that needs occasionally scratching than something I'd be really motivated to stick with. (I'd still heartily recommend it to fans of classic strategy games, though. Even when not on sale, the game's only ten bucks at GOG.com, which seems like a bargain.)