It's hard to tell because I have played a lot of games but that comes to mind immediately right now. I would say:

1. Red Dead Redemption 2.
2. Garry's Mod.
3. Titanfall 2.

Red Dead Redemption 2 is a game that I absolutely fell in love with and it's one that I regularly go back to just lose myself in and still find new things in it. Arthur Morgan might just be my favorite protagonist of anything ever. It's still one of the best looking games ever made. The game looks like a painting. And you know they did something truly special when they managed to make my ADHD ass enjoy just walking in a game without running.

Gary's Mod is an odd pick for me because I almost thought about leaving it out because I cannot like don't see it as a game. I have thousands of hours on it and most of my time has been spent exploring empty maps. It's more of a tool of relaxation for me than anything else but it's deeply meaningful to me. If I had to summarize it, I would say that the Source engine is my home.

Titanfall 2 is simply the best FPS I've ever played. Both multiplayer and solo. It's amazing. I have spent weekends just playing the main campaign on max difficulty on loop without ever getting bored and the multiplayer was fucking fantastic.

Street Fighter II for getting me into fighting games. While I don't play that version anymore it is a favorite because of how much I did play it and later fighting games.

Valheim - hundreds of hours of enjoyment from the first moment I was dropped into the world by a giant crow. So much fun time with friends, building stuff, and just exploring. Such a well done game with fantastic lighting, sound, and things to do. Only long tine gripe is fighting on slopes!

Helldivers 2 - yeah, another more recent game but it is also just the exact thing I am looking for in a mutiplayer game with friends. Nearly everything is viable in most difficulties, the game has mechanics for accidental team kills, the setting evolves, but in a way that encourages participation in scheduled events without forcing it, and the devs have listened when the player base pushes back on changes that don't mesh with the tone of the game.

Enjoyed a lot of other games too, but those are ones that hit specific things that I love and enjoyable to replay over and over and over and over...

1. Mafia 1 from 2002, that game really shaped my taste in games when I was a kid
2. Kingdom Come Deliverance 2. Essentially a perfect video game from start to finish IMO.
3. Alan Wake 1 or 2, genuinely hard to pick one.

• Gothic 2, and by extension, Chronicles of Myrtana
• The Binding of Isaac: Rebirth
• Both are equally as monumental, so it’s shared between Obra Dinn, and Outer Wilds

That being said, i’ve excluded any mmos out of this list, purely because sometimes i struggle to call them my favorite games, despite having playing several thousand hours of each. Some of them have been unbelievably impactful at certain times in my life, but i’m afraid the embers are getting cold now

1. Jump Ultimate Stars, this is the dream game for any Otaku, the fact that we can still play it in 2025 thanks to custom servers is a blessing.

2. God Of War 2018, I was having a bad streak gaming related due to personal and work life, but when this game was released I got it immediately, something that I rarely do (patient gamer gang), anyway, this game kept me awake late nights, I know this is not something that one should brag about, but I was enjoying it completely thus the nights felt that happened too quickly.

3. Toy Story 2, this game will never age for me, I honestly don't know if it should deserve this spot, but if there is a game that I have replayed the most in my life, this would be it, the platform mechanics and graphics are top notch for me (and hey, PS1 graphics are making a comeback, so no shame at all with that style).

Maybe another game deserves that last spot, but those 3 games were the 1st ones that came to my mind.

Honorable mentions:

Mario Kart DS

Phoenix Wright Ace Attorney Trilogy

Hotel Dusk & The Last Window (can you guess my favorite console by this point?)

Pokémon Soul Silver

TWEWY

Time Hollow

All the other God of War games (even Ascension)

Batman Arkham saga (even Origins)

The Witcher 3

Xenoblade

And a bunch others that would make this list absurdly big, which is not the main point of this post.

Morrowind - the first game that let me leave the path. It completely changed RPGs for me, and I loved it.

Solasta - this game captured the D&D feeling like no other game has. My wife and I have spent hundreds of hours playing this together.

Dragon Age: The Veilguard - this game touched me emotionally, more than any game before it. The whole 3rd act is an emotional rollercoaster. Plus it has one of my favorite action sequences ever, in The Siege of Weisshaupt.

• Starcraft II
• Mount & Blade: Warband
• Heroes of Might & Magic III

Honorable mentions

• Anno 1404
• Far Cry 2
• Witcher 3
• Tropico 4
• Factorio

• Link to the Past
• Super Mario Bros 3
• GTA 4

I took into account the impact at the time of release as well as the timelessness of the games.

Did you play RDR1? I thought that one was much better than 2, story wise. Not that 2 was bad. Rockstar games are always good imo.

Baldur's gate 3 is also in my top 3, story wise and how well it was made and time spent playing it. I finished the campaign 6 times now, 4 of which with friends playing couch coop.

Also Age of Empires 2 because when I was young I played that game for over at least 3000 hours (if not double) and I still play it sometimes. Just well balanced and lots of good memories from back then, having LAN parties with my friends and playing it for days.

Grammar. ~~You're~~ -> Your*

The Last Of Us part 1 and 2 and the Witcher 3

Star Wars Pod Racer Halo Reach Word of Warcraft

Pod racer was the first game I was better than my younger sibling and when I bought my very first CD (Green Day). I spent hours playing that game with my CD on repeat.

Halo Reach was the first Halo game I was really into and first console modern game played. I spent so many hours playing online and IRL with friends.

World of Warcraft is the game I’ve played the longest. I’ve been playing since a few months after launch. Even though I initially thought it was “too cartoony”, it has kept me entertained for decades. Some of my favorite books are from Warcraft lore. I’ve played countless hours with friends, but now I play solo more than anything. I chase achievements, transmogs, and pets.

• Oldschool RuneScape
• Factorio
• Baldur's gate 3

1. World of Warcraft
2. TES V: Skyrim
3. Minecraft

Minecraft Borderlands 2 Bioshock

honourable mention for Zelda on N64

but the top 3 are based on replayability and just how easy it is to spend time playing them

In no particular order ( mostly cos i think ranking beyond a certain degree of precision hurts the art involved ):

• NieR Automata
• NieR Replicant (ver 1.22.. , realistically)
• The Talos Principle ( one of the most suprisingly brilliant games that too many people haven't played)

then i suppose one tier below, not consequent of any particular shortcomings, but rather just not being at the same "transendent" level as the above:

• Crosscode
• Citizen sleeper
• What Remains Of Edith Finch
• Portal & 2

NieR automata literally changed my life, so it kinda deserves it's own top spot, but placed as is in spirit of the question.

Going to have to go with the three that had the biggest impact on me.

1: Doom / Doom 2. In addition to being two of the most influential and important FPS games of all time, they got me into modding, programming, the internet, 3D graphics, shaping my entire future career path.

2: Kerbal space program. No moment in all of gaming had me leap out of my chair and whoop the way landing in the Mun for the first time did. Now that I understand orbital mechanics, I get annoyed at almost all depictions of space flight in movies.

3: Factorio. Got to this one late, on Switch about 6 months ago. I can't think of any game which has rewired my brain as much. As a programmer, I come away from each play through with entire new methods of solving problems at work. May be the single most in depth and addictive game I've ever played.

No one is going to agree with me, but here I go:

• Counter Strike (all versions): the perfect shooter.
• Terraria: the progression is amazing, but what never ceases to amaze me is how, despite the game's huge content, it is never overwhelming or intimidating. Just a lot of fun.
• Transport Fever 2: by far my favorite world-builder type game, and it still gets updates!

• Wing Commander 4 - At the time, I was very young, and this game changed how I looked at videogames. For my little brain, the FMV cutscenes and genuinely decent acting (ffs, it has Mark Hammil) somehow made it click that games could have compelling narrative
• Kingdom Hearts - this game changed my life in many ways. I can genuinely say I wouldn't be doing what I do today if it weren't for this game and my involvement in the fan community around it. This game is very special to me because of its themes and major plot beats, and how those interacted with my life at the time. This game taught me that you could go beyond "compelling narrative" and break my heart with a video game lol
• Natural Selection 2 - I wish this game were more popular in its prime. This is the epitome of what I think good competition looks like, and a great manifestation of what I personally love in esports

The Last of Us, Mass Effect 2, Star Wars Jedi: Fallen Order

Dungeon Keeper.
BOTW.
Emperor: Rise of the middle kingdom

1. Europa Universalis IV
2. The Legend of Zelda: A Link to the Past
3. Lords of the Realm II

EUIV will probably be replaced by EUV when it comes out.