Early games are easy to say like Ocarina and such but I think the games I really started to compare to:

Ratchet and clank- sure I played mario64 but I didnt really grasp the breadth of platforming until ps2. The Jak/Ratchet games really secured my expectations in future platformers for what I expect from movement and targeting in games. Especially by Deadlocked, being able to strafe and fire/keeping your gun/ camera on target and snappy switching between them is something I notice even new games not get right. A great example of this is Darktide - for all its fun sometimes the button inputs for weapon swap dont trigger due to input overload. For me this is the "Why doesn't this third person game just have Ratchet controls"

Exploration was easily shaped by Ocarina of Time. Where checking behind the waterfall isn't an easter egg, it's an expectation. The temples certainly stretched the imagination for puzzles, and modern game puzzles genuinely don't feel like they rise to it. Being older and sharper has helped but perception wise it felt like the first game to challenge me like an older game did was Portal 2 for difficulty, and Genshin Impact for small fun puzzles. (Not that they are particularly hard but it takes some thought and intentional placement) for me some games just hit the "exploration and puzzles should challenge the player"

This one isn't new or controversial: but gaming in the 360/ps3 era and older, seeing cash shops lock up cosmetics you used to just....unlock. like whole ass costumes and easter egg outfits. Colors and reskinned weapons all sold back to players now. I get the whole f2p "gotta make a sale to stay free" but holy shit $20 for a fortnite skin is disgusting considering how many people buy that specific skin. It pays for itself and THEN some, and they drip these every week or so - and every single one sells a thousand copies to different users. "Game companies got greedy, and cut content to sell back to you after swearing they wouldn't"

Black ops 2: I didn't play earlier games and mostly grew up with cartoon violence, so this was my first real foray into an online environment and experience that I compare shooter level design to. I still compare the new(ish) call of duties to it. Moreso like "how the fuck are spawns still this fucking dogshit, have they learned nothing in 20 years" and "How the fuck is nuketown still a map its too small to make any really plays, it's just spawncamping for 10 minutes" (the answer is kids like it for some reason). And why I haven't bought a cod since cold war (the homies all wanted to play so we made a game night out of it).Anyway BO2 is what I compare shooters to. If you can't match a 2012 game in terms of how easy it is to traverse a pvp level, and the player feedback of a kill (like how impactful it feels to secure the kill is almost on par with Doom2016) "Kills should feel punchy, dynamic, like you actually hit that fuckin dude through a wall, not just tickled him and he ragdolled"

Pokemon gold/silver and Emerald. "Games don't have to have super deep or complex stories, or fantastic budget breaking graphics to be fun