Impossible to rank, so I'll pull from at random from a top 25 I did not long ago:

• Trails to Azure - This one had a massive impact on me, from musings on depression and self-worth to love for a city, a community, and the hard choices that come from that love. Incredible story and character writing. All boosted by a well-developed world with a lot of moving parts and a crazy good soundtrack.
• WarioWare, Inc.: Mega Microgames - Endlessly replayable. Holds up even to this day. Every time I think about it, I'm amazed at how they got lightning in a bottle with this new idea.
• The Witcher 3: Wild Hunt - Just one of those games where every single facet clicked for me. Visuals, writing, setting, soundtrack, gameplay, meta-gameplay, decision points. All of it.

1. Super Metroid
2. Fallout: New Vegas
3. Factorio

• Shadow Warrior 2 (playing with Quake 3 arsenal)
• Prey (playing in VR)
• Burnout Paradise (playing with wheel and VR).

Oh, cheeky 4th one: Magicraft (best bite-sized PoE/arpg ever)

Planetside 2 used to be my no.1 game, but I haven't played in a couple years and do not believe I'll ever return.

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

• 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

Gameboy Tetris, Galaga on the Amiga, ZX Spectrum Atic Atac.

MGS3

Rocket League

Resident Evil 4

Those are all relatively new games. How old are you? Just decade, not specifics. I'm in my 40s. I'd say my top 3 are World of Warcraft, Factorio, and Final Fantasy 6.

1. Horizon: Zero Dawn
2. Ghost of Tsushima
3. Legend of Zelda: Breath of the Wild

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.

Final Fantasy XI
Shovel Knight
Hades

PHANTOM CRASH!

RDR2

Project Zomboid

Mostly based off hours played: EU4, Borderlands 2, Bioshock.

I excluded League of Legends even though I probably have the second most hours in that. Toxic as shit and I'm glad I gave it up.

Read everyone else's picks and Tales of Phantasia is one RPG I've gone back to countless times. Might be the only one where I can come back to it months later and pick right back up where I left off. I know it that well.

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

Today:

• Super mario world
• Shadowrun Dragonfall
• Mechwarrior 4 mercenaries

Half-Life 2, Max Payne 2 and Mass Effect because I‘ve been an impressionable teenager and a nitpicking adult.

Beat Off The Wiener was a game I enjoyed as a youth as well.

1. Singaporean Bridge - It's basically a crossover of Bridge and Werewolf / Polar Bear / Among Us. That small change of not knowing who your partner is from the start makes for games that are way more fun.
2. Pokemon Soulsilver - I love the following mechanic. The other features of the game are really great too.
3. Raze 2 - I have seen others describe it as the "Halo of flash games". Personally, I had a blast playing it. Also, Waterflame's soundtracks are the GOAT.

Bg3

Fo NV

Cultic

Couch coop: Ssx tricky Original Halo

Solo: Roller coaster tycoon Skyrim Rdr (zombies)

Competitive: Sc2

Mmo: Wow

But I'm older. So that's a factor. Haven't gamed in years.

Duskers, Homeworld & Earth-2150

Now this is a tough one to be honest. But if i had to pick:

1. Cyberpunk 2077
2. Sekiro: Shadows Die Twice
3. Hades

Honorable mentions (cant leave these out): Return of the Obra Dinn, Wasteland 2, Darkest Dungeon, and many more...

Call me Nostradamus 'cause it's Silksong.

Favourite of all time?

Wing Commander (2 if I have to pick one, otherwise 1, 2, and secret missions).

Monkey Island (3 if I have to pick one, 1 to 3 otherwise).

Third is difficult, but... Disco Elysium, I guess..?

(What games I've spent the most time playing, though..? Definitely Crusader Kings 2 and 3, followed by Stellaris.)

One has to be Crusader Kings III considering the amount of time that died in that game. I did Lingua Franca (world domination) when mods and savescumming voided achievements, my whole empire fell apart literally 20 seconds after I achieved world domination lol, could barely hold it together to achieve the feat.

The other one is probably Rocket League. Low skill floor, skyhigh skill ceiling, wonderfully designed esports game. If you could still freely go in and out of casual games, I‘d probably still play it. But I peaked and don‘t feel the need to play ranked anymore and casuals started to feel like ranked.

After these two I can probably name ten more but I can‘t say which takes a top 3. League of Legends, Counterstrike 1.6, Battlefield 3, HITMAN, Dark Souls II (yep lol, I could probably draw a map of this game from memory), NIOH 1/2, Monster Hunter World, Sleeping Dogs, Muse Dash, all these games killed countless hours with fun, but it‘s hard to put one above the other. Apart from League of Legends, that one takes the rear.

1. OMORI
2. Children of Morta
3. One Dreamer

This might change everyday, especially for #3 I don't have a definite pick. But I chose the lesser-known game.

Your title says "What are in you are top 3 favourite games of all time".

You were thinking of "your", which is possessive. "You're" is a contraction of "you" and "are"; the apostrophe is a hint there.