Well, none because favorites are super subjective, but I'll shout out my favorites because no one else did:

1. The Wonderful 101
2. Bayonetta
3. Ninja Gaiden II
4. God Hand
5. Viewtiful Joe
6. Catherine
7. Gravity Rush
8. Guilty Gear XX Accent Core Plus R
9. Under Night In-Birth II Sys:Celes
10. Persona 4 Arena Ultimax
11. Crimzon Clover: World EXplosion
12. Ketsui: Kizuna Jigoku Tachi

Elden Ring

There is no game: wrong dimension

I think Bioshock 1, Inscryption, Portal 1 & 2(I believe that 2 wouldn't be so loved if we didn't already love 1, I like to think of them as a set), Silent Hill 2, Resident Evil, Nier Automata, and Okami.

Portal 2.

objective

MEDIA APPRECIATION DOES NOT WORK THAT WAY, GOOD NIGHT!

Just out of curiosity, listing the games mentioned here as of this writing by their date of release:

Factorio.

I think Outer Wilds is the most unique and fantastic way to tell a story I've ever experienced. Truly open in a way I've not seen before or since.

With the banger of a soundtrack too, I just can't bring myself to rate other games higher than it; even if I enjoy them more, Outer Wilds is probably the best game I've ever played.

Slay the Spire probably makes the list as it's inspired countless tweaks on its incredibly balanced deck building experience

Portal/Portal 2

Deus Ex (the original)

Minecraft

Stardew Valley

Terraria

Mirror's Edge

Chrono Trigger

Cyberpunk 2077

Hades

Subnautica

A Short Hike

Donut County

Holy shit somehow no one has mentioned:

Nier Automata

It counts as a masterpiece because of how well it blends game design, gameplay and story. I have played very few games as thoughtful, or that weaved the gameplay together into the story it was telling in such a meaningful way. I never thought once in my life that I would think philosophically about bullet hell but somehow Nier Automata has something profound to say and even manages to say it using bullet hell as a gameplay mechanic.

On top of all this, it also has a lot to say about classical philosophers, their works, and honestly deeply subverts things they had to say. It asks tough questions about their thoughts and ideas, once again, through gameplay. Numerous characters are named for classical philosophers: Pascal, Jean-Paul, Simone, Engels, Immanuel... (Yoko Taro obviously has feelings about how Jean-Paul Sartre treated Simone de Beauvoir.)

Further, Yoko Taro is doing something that a lot of game developers fail to manage to do: He is embracing gaming as a storytelling medium and eschewing the traditional three-act arc from film. Because gaming is not film. As Marshall McLuhan posited, "the medium is the message" and unlike other developers Taro's writing is aimed at the medium he is working in instead of leaning on the ropes and tropes of other mediums. (Referring back to above, tying the gameplay into the story, focusing on the medium)

It's basically impossible to not break down into tears at the ending.

Don't write it off because of the scantily clad anime women. Stay for the depth of the human condition. It is truly a masterwork in multiple respects.

Katamari Damacy. It has a reputation for being silly Japanese nonsense, but the gameplay is brilliant, the graphics are timeless, the soundtrack is incredible, and it has some surprising thematic depth.

Outer wilds

Shadow of the Colossus

We'll see how much is recency bias and how well it will stand the test of time, but I really think Clair Obscur: Expedition 33 will be on this list going forward. It's definitely one of the best games I've ever played, and I've played a lot of games. It's not perfect, but it's close enough in all the parts that actually matter.

Otherwise there's your usual suspects:

• Disco Elysium
• Portal
• Half-Life 2
• Bioshock 1
• Final Fantasy VI
• Chrono Trigger
• Zelda: Ocarina of Time
• The Last of Us
• Baldur's Gate 2

• Chrono Trigger
• Disco Elysium
• Sekiro
• Zelda Ocarina of Time
• Bioshock
• Portal
• Half Life
• Nier Automata
• Tetris

Flawed Masterpieces

• Minecraft (surprising)
• Dragon age Origins
• Team Fortress 2
• Fallout New Vegas
• Dark Souls
• Every Baldur's Gate

Masterpiece in my heart: Terraria

Assuming that "masterpiece" refers to the quality and impact the games had in their time (not how well they aged) some of my picks would be:

• Baldur's Gate 2 + ToB
• Star Wars: KotoR
• Morrowind
• Read Dead Redemption 2
• The Witcher 3
• The Last of Us 1+2
• God of War
• Shadow of the Colossus
• The Legend of Zelda: BOTW
• Mass Effect 1+2
• Disco Elysium
• Half Life 2
• BioShock 1
• Diablo 2
• Fallout 2

I don't know how objective this list is. Some picks are definitely subjective and fit more in a "flawed masterpiece" category of games that had a large impact on how I perceived games but that may not be so widely acclaimed as some others on this list.

For me it's Journey. That game gave me an emotional experience I've never had in any other.

Bastion, Hades, Disco Elysium, Planescape: Torment, and Tyranny (even if the last act is rushed in the last two) come to mind for me

There is no "objective" when talking about subjective terms.

My personal, SUBJECTIVE favorites are Mass Effect, Titanfall 2, Subnautica, Stardew Valley, Ori and the Blind Forest, Dave the Diver, Balatro, and Portal 1 and 2

Journey

There is not a single word in the game, barely any control but the game take you through an emotional story.

It's multiplayer in a sense that you might meet another player, they can help you, you can help them or just continue on your path and despite not having any words it just fell like a genuine, pure connection with someone.

And the music is amazing.