Pong: The Revenge of Chuck E. Cheese

it's either this or HOMM3

The most iconic game is obviously still not here:

https://store.steampowered.com/app/1133520/ICONIC/

(free to play so calm down everyone before reporting for linking other stores and diverting sales or whatever paranoid rule you were about to bring up :P)

Deus Ex.

Okay, serious question

Can this title be given to:

1. Disco Elysium

OR

2. Baldur's Gate 2?

No clue about the "fixed version" but the GoG version is from 2020, Steam got the 2018 version. There is no sign of any updates there. Pretty old game... from 2014. I have so far no performance or general tech issues apart from some lighting issues (weird flickering at certain spots).

You may be right, but I was trying to be a bit more subtle, so kinder I guess. And they always reel in the responders, so it ain't just about them. LOL
I can't help but feel you are being very personal there.

Surely the Stellaris game, with it's huge fan base must be a contender. And while I have the game, I've not played it yet.

Personally I'd vote for Quake and Doom, which are both iconic. Hell, Tomb Raider is iconic. And what about the Elder Scroll games. I could provide a long list of iconic games. But which one is truly iconic or the most so, I have no idea, and I refute that anybody else does either.

Different games mean different things to different people, and to developers.

First we need to determine what iconic exactly means, which is definitely the challenge I pointed out to the OP, that they are yet to take up ... wonder why. There needs to be some kind of context and consensus.

HOMM 3 !

Nope, I was mostly thinking of which games were always the reason you'd hear someone talk about GOG, like sure nowadays we have a ton of classics, but back in the day it was mostly those I mention

That's why I said iconic for GOG, overall? sure, Doom is beyond iconic for gaming, it would easily enter the top 3

Another problem with BG2 is that the original isn't actually, in itself, on GOG anymore, it's only a bonus to the EE, so I'd say that it really couldn't fit the bill regardless of whether the game might have done so in itself.
And definitely agree that Disco Elysium couldn't possibly be a pick. But not with the pre-2000 requirement. Ten years old is probably enough. And games from the 90s may well by now be before the time of many current gamers (talk about feeling old...), for whom they may not even really register anymore, with any innovation or lasting impact they might have had taken as granted. Which is absolutely normal, and if we'd go back far enough we'll reach a point where that will be the case for almost anyone.

The easiest answer is Witcher 1, because it's fantastic, I got it for free and despite the funky combat the game is fantastic full of passion.

But honestly it's MGS, GOG and Konami working together to release that master piece.

Then obviously the Resident Evil Serie, for the same reason.

Apart from this games, there are so many others that I'm happy to own it also here.

Divine/Beyond Divinity
Some of the first games gog released, and some of what brought me here in the first place.

System Shock 1/2
The sequel especially was in legal limbo for a long time and it's release here caused something of a stir.

Duke Nukem Forever
Was in dev hell for a LONG time, and released on steam/gog/etc to very mixed stances and opinions.

Resident Evil Trilogy
Not many likely felt these games would come here, but now here they are :)

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You're putting too much thought into what is most likely a thread made to generate some friendly discussion (nostalgic/etc). Just do like everyone else, turn your brain off for a bit and enjoy listing 'iconic' games :)

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That one right there, if we had to pick between just those two.

It’s a completely subjective call of course, but in my opinion the most “iconic”, i.e. best-of-their-kind games on GOG are :

STEALTH : Thief 1,2 and 3. Thief 2 is the high point imo. Timeless classics. Brilliant level design, great gameplay, incredible atmosphere and one of the best protagonists in games history. I didn’t even give these a look when they first came out, but how wrong I was !

Honourable mentions : Splinter Cell (Chaos Theory, not on GOG is the best, but the original is great too). Dishonored 1,2 and Death of the Outsider. Obvious love-letters to Thief, they are VERY good but ultimately too easy imo, on account of powers such as Blink. Corvo is cool as well, but not as cool as Garrett. I love the art-style of the graphics.

ISOMETRIC PARTY-BASED RPGs : The Infinity Engine games, all of them. The best is either Planescape : Torment or BG2. I would just give it to the latter. The original BG was the first PC game I bought, along with Age of Empires 2. I probably enjoyed these games more than any others I have played, though I haven’t fired any of them up in years now. I actually love RTwP combat and prefer it to turn-based, which would turn these games into slogs. It works just fine when you get the hang of it. It’s important to learn and understand the rules ! Black Isle’s writing is so full of personality and humour, I miss it. I’m not interested in trying BG3 because I love originals too much.

OPEN-WORLD 1st PERSON RPGs : The modern Fallouts ! Heresy perhaps but I love them, with New Vegas being the best. I’ve never actually played the original “isometric” Fallouts, though. I prefer these games to the Elder Scrolls games, which to me are beautiful but somehow also boring,

IMMERSIVE SIMS (tied) : Deus Ex, both the original and the newer HR and DX : MD. Invisible War was pants. Human Revolution is probably my favourite, just pipping the original (another piece of heresy !). Mankind Divided is great, too, and the prison DLC (I forget its name) is brilliant.

Tied with : System Shock (remake) and System Shock 2. These games are designed so well and have such great gameplay and atmosphere. I have never played the original SS but Nightdive did a great job with the remake. A terrifying combination of the agoraphobia of outer space combined with the claustrophobia of being alone aboard a space ship.Well, not entirely alone.

Honourable mention : Prey (2017). This is so good it is perhaps as good as the System Shocks. Brilliant stuff from Arkane. A love-letter to System Shock, as Dishonored is a love-letter to Thief. A studio with great taste and great talent.

4X : Civ 4, and especially the mod for it called Fall from Heaven 2, which is probably the best mod I’ve ever played for any game. I’ve sunk more hours into this game than any other. Sid Meier started it, Soren Johnson perfected it. There is just so much game here, it is a game which if you love it you will play it for years, if not your whole life. I am not interested in any iteration of Civ after 4 : one unit per tile does not appeal to me at all. Stacks of doom rule ! I must confess, though, that I’ve never played Alpha Centauri !

TURN-BASED STRATEGY : The original X-Coms, with Terror from the Deep being my favourite. I actually think the underwater scenario is spookier than the terrestrial setting of the original. Amazing suspenseful atmosphere and challenging gameplay. I’ve never tried the new Firaxis ones or Xenonauts or Phoenix Point yet and keep putting off trying because I just don’t see how the originals can be bettered. Apocalypse is awesome too, but I gave up when I reached the alien realm, which I didn’t like so much.

These are my idea of the most “iconic” games on GOG. Obviously I’ve left out quite a few genres, including point-and-clicks and RTS games, but I don’t play those much these days. Maybe I should have included the original Tomb Raiders as well ? Nearly every game I’ve mentioned here is pretty old. That either says something about me, or it simply demonstrates that all the “classics” appeared early on and haven’t been bettered. Obviously just my opinion, though, because it’s entirely subjective.

Games which are considered by many as classics but which I can’t bring myself to play are : The Witcher, on account of the (imo) awful combat (at least in the original) and the 3rd person perspective.

Just wanted to give you props for your write-up. I enjoyed reading it.