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.
me when i find another thread to say Yakuza Like a Dragon is bad
I'd write up all about what I don't like about it if my lunch break wasn't about to end
I thought Yakuza 6 was pretty bad but it's a fucking gem in comparison to LAD
Also I just straight up didn't get Undertale. The whole thing was riffing on a genre I didn't really understand and i just ended up confused as to what the point they were going for was. The game might as well have been in Chinese for what I understood of it
Very hot take for the Yakuza fanbase but honestly I liked Kiwami the best. Sharpest gameplay out of the series (though the boss fights are frankly pretty obnoxious). 0 and 5 were both top notch. 3 was great though the gameplay has uhhh... not really aged well