Stronghold, which I've tinkered with enough to realize it's a fine castle sim, but I don't have any talent for it. I really don't know what I'm doing and the tutorial was no help. This was just getting a sustainable economy off the ground; I didn't even bother with a military campaign. So it's no fun, which all games should be on some level, no matter how deep-buried. I was a big Castles 1/2 fan growing up as a kid, but I guess I understood the mechanics of those games better, or they were simpler, or both.
Divine Divinity, which I originally bought in a brick-and-mortar store but never was able to play due to its curmudgeony SecuROM which hated my computer's virtual drives even with the disc in the CD-ROM. Finally got the opportunity here on GOG, and after toying with it for an hour I realized how burnt out I was on Diablo-esque gameplay after all (I hadn't just imagined it).
Blood I, which I played the shareware version of a long time ago in the dial-up dark ages as a teenager. I had some fond memories of it as a mindless timekiller, but buying and loading it up again was a good lesson in gaming nostalgia; sometimes you
can't go home again. I was confronted with just how primitive and crude it was, unforgiving in its difficulty level, and a programming leftover from a previous gaming generation that didn't even have the
de rigueur freelook yet. Not all of Monolith's games have aged well.
That's about it; thankfully not that many, and they were cheap disappointments. So if I had to be underwhelmed, better on GOG than at some overpriced software boutique or website.