I'll state an old classic that is seen as a genre defining game because it is: Myst. Yes, it redefined the genre... in ways I fucking hated and that the adventure game genre took decades to fully recover from. It was a pompous mess in its presentation and was the worst kind of "doing action does vague thing or nothing at all, where is your hint book" puzzle gameplay wrapped in graphical hype which ages pretty poorly as far as appeal qualities go.
So many adventure games tried to be Myst afterward that the sheer budgetary costs and redundancy of the also-rans crashed the adventure game genre for years.
Bethesda games in general. Maybe I will give Morrowind another try eventually (only played like an hour) but my experience with the other ones discourages me greatly. Gameplay is boring, balancing is non existent ( you either steamroll or have to cheese encounters). People always point out the cool quests and lore but they are buried in a mountain of mediocre slop. Aesthetically, apart from Morrowind I find them really dull. I do give them props for the modding support tho, I've started playing the forgotten city and having a blast, and that was originally a Skyrim mod.
Also a link to the past. Maybe it's because it's the most "vanilla" Zelda ever got.
Do try Morrowind, it's great. You need to know just a few things though, and it will be way more likely to click for you:
Make your own class and just choose one weapon type. A lot of the premade classes waste major/minor skills on dumb stuff.
Don't try to use any other type of weapon. You won't hit. Wait until like level 20 to start trying other weapons.
Your green Fatigue bar needs to be full to not fuck up everything you do- including magic and even bartering/speechcraft. Everything. Full fatigue bar.
Make Alchemy a minor skill no matter what. Buy/steal/find Marshmerrow and Saltrice. Bind those to your quick keys on the number row. I use 3 and 4. Tap the key to munch on the herbs. Sometimes it'll take a couple tries to get a lasting effect. Viola. You now have practically free HEALTH and FATIGUE potions that take up barely any weight and actually help a lot early to mid game. Way less waiting for that green bar to fill up.