I was pretty sure I own Divinity II on steam, although it turns out I don't.
It's posted as $21.99 CAD, and the community discussion threads seem to show me that you might get some unexpectedly low performance on modern hardware, but nothing I saw on a quick perusal seemed to indicate the game straight up doesn't launch.
With that being said, with something that old, there's really no guarantee that it works on a modern system, and for that, steam has a very nice return policy. Namely that if you have less than 2 hours played on it, and bought it within two weeks, you can return it, with no exceptions.
If you bought it because it was on sale, and then didn't play it for 10 years, well, that's on you I guess.
I would like to salvage this post and pivot more into a discussion about games you literally shouldn't play, though.
And top on my list for that is Maplestory.
Let me start by saying I've played the global version of Maplestory since the open beta period in 2008? I think? I played beta, my characters were erased when they went to official release. I was there when the cash shop opened with cosmetics and pets. I was there when exp boosters and drop boosters became a thing. I was there when they first started adding new jobs. I have literally tens of thousands of hours in this game. I used to use Xfire and it tracked my play time, and it was reading 7000+ hours on there, and that was only a small fraction of the actual time I'd played, and I've played many, many more years after that.
The game is a boring grindfest designed to siphon as much of your money away from you as it can. Upgrading items requires you to touch RNG systems on top of RNG systems on top of RNG systems, and on a regular server 3/4 of those systems also require you to spend real actual money to get anywhere.
When they launched reboot, a lot of the pay to win aspects were dialed back, in favor of spending straight in game currency to get a lot of those items, but all this really did was make the game an unending slog of grinding mobs for hundreds of hours per month to spend all of the in game money you got on the (very slight) chance of successfully upgrading a couple of pieces of your gear for a slight increase in damage, but more likely you'd downgrade your stuff and have to spend another hundred hours grinding back the money to hopefully get back to where you started.
Not to mention the stability issues, terrible support system, and the fact that GMS is actively trying to sabotage their own product for seemingly no reason. Their in game events often cause so much in game lag that the game is unplayable. Their channel servers just occasionally die, and cause recent progress made to simply vanish into nothing. Their support staff is less than helpful, and their anti-cheat/anti-bot detection is laughably bad, often triggering auto bans on innocent people which don't get overturned because of the aforementioned support staff, while somehow not being able to actually detect and ban botters/hackers at all.
They recently removed an entire job from the game, one which was made available about 10 years ago, and was a GMS exclusive job. While it wasn't particularly popular, there were still active people playing it up to the end, and they provided those people, who likely spent hundreds or thousands of hours on that one character, the ability to change to a small selection of other jobs, a few EXP items, and a couple of replacement equipments for the new job.
There are a couple of other Jobs in the game which are not originally from the korean version of the game as well, which the player base collectively assumes will also be removed at some point in the future as well.
As someone who has way too much time (and money) sunk into this game, I can honestly say that no one should ever play it. I haven't played it in over a year, but I can never stop forever, and it won't be long until I'm back playing it again. Play something that respects your time.