Glad you're still getting so much out of a 14 year old game, that's awesome. I'm too much of a graphics nerd to play anything that graphically-outdated-looking at this point.
Now, I've busted out the original Far Cry and Half-Life 2 (and the Episodes) many times over the years and can still enjoy them esp. with mods ... and while those were circa 2004 games like RCT3, they were cutting-edge DX9 at the time ... those shots look like that game was probably DX8 ... looks just a tad better than original Deus Ex quality which was 2001 I think.
I know, snobby of me and while I love the IDEA of loving games just for the game ... meh ... they have to also look cool to me, I admit it
This relatively recent game looks tolerably good (though I still think it's a bit shoddy graphics for a PC game from 2017 ... it's probably like this cause you can build a ginormous park and they want people with potato computers to at least be able to run it) ... I could see maybe getting into this one. Maybe check out the trailer if you'd not seen it already. Maybe it's time to move into the current decade
https://www.planetcoaster.com/en-gb