If I had to pick, out of all games I played, which ones where the most fun, these ones would be it:

Age of Empires 2: Definitive Edition -> The 20 years anniversary remake of the classic 1999 game, it's exactly the same game except with 2020s graphics and a lot more civilizations, about 50 instead of 17 in the 1999 version.

Chivalry 2 -> A fun sword battle game.

Call of Duty Black Ops 3 -> Out of all old CoD games, I think BO3 is the best because of co-op campaign and the largest collection of zombie map

Cyberpunk 2077 -> One of the best RPGs to have ever walked the mortal plane.

Dishonored 2 -> A really great adventure game where there are more ways to complete your objective.

Grand Theft Auto V -> Come on, it's GTA, you know about this game.

Hitman: World of Assassination -> This is basically all modern Hitman games (1, 2 and 3) in one game. It's a huge all-in-one game.

Just Cause 3 -> A GTA game better than a GTA. With a lot of explosions. If Michael Bay would have directed a game, this would be it.

Killing Floor 2 -> The game is exactly what is sounds like. You don't know why you are there, all you know is that you must kill.

Legion 2 TD -> On of the best Tower Defense games on the market. With competitive ranked and all that good stuff.

Mortal Kombat 11 -> Mortal Kombat 1 is bad. Mortal Kombat 11 is the last great Mortal Kombat.

Mount&Blade: Bannerlord -> It's a half-strategy, half-tactical, half-third person shooter game. In a "not-Europe" continent there are 6 kingdoms fighting for power: Red - not Western Europe, Purple - not Roman Empire, Yellow - not Ottoman Empire, Purple - not Mongols, Blue - not Eastern Europe, Green - not Celts and a 7th not Vikings will soon be added. You command a warband and can do anything with it, the game at its core is sandbox, you can be a bandit, mercenary, whatever you want.

Overcooked! All You Can Eat -> A very fun game that is best played co-op but can also be played singleplayer. Basically, you have to cook before the timer runs out.

Overgrowth -> Remember those movies with Asians jumping and fighting on rooftops? this game is it. It also has a multiplayer beta.

Pathologic 2 -> This game is simply beautiful. The more I say about it the more I break the experience. But I will say this: being difficult it's a feature not a bug, you can't win a 3vs1 fight because you're not supposed to, you're a doctor not a wrestler. Characters lie, some quests are actually bad for you or the town if you complete them, you'll have to read what characters say and figure out the truth yourself. You can't save everyone.

Project Zomboid -> A zombie survival game with a lot of attention to details. You have calories, traits, etc. I usually don't like top-down games but this one is an exception because of how in-depth is the survival mechanics in this game are, you can literally count your calories.

Pummel Party -> The ultimate game to play with friends.

Ready or Not -> SWAT 4 but modern game. No lootboxes crap, just pure SWAT action.

Read Dead Redemption 2 -> Everyone knows this game.

Rock of Ages 3 -> Fun and unusual as hell. The menu is ugly but the game itself is great.

Total War: Warhammer 2 -> The best games in the Total War series are: Warhammer 2 for fantasy and Shogun 2 for non-fantasy historical games. Total War Warhammer 3 has a terrible story campaign and factions became more focused on click-mechanics rather than battles as in Warhammer 2. The balance and the atmosphere is also better in Warhammer 2 with a great visual style.

Warhammer: Vermintide 2 -> The first-person version of the Total War Warhammer strategy game. You fight hordes of enemies in both melee and range, usually being beaten by numbers.

Wreckfest -> The best racing game in my opinion. Because it's focused on demolition & destruction. It has demolition derby, arena battles and many other fun game modes. It also has a populated multiplayer.

The Witcher 3 -> A great RPG game.

Meta Quest 2/3 is the poster image of VR, why? Because it's a jack of all trades with an excellent price-quality ratio. Some VR headsets are better connected to a PC aka PCVR, other VR headsets are better standalone, but Meta Quest 2/3 is the only one who can do both PC gaming and standalone gaming well.

With jack of all trades like Meta Quest 2/3 you usually have a choice: do you want to buy the game on Steam or on Meta? If you buy them on Meta they usually have worse graphics but all you need to play them is the VR headset itself. If you buy them on Steam they usually have better graphics but you need to connect your headset through Steam using a long USB-C cable or Air Wireless. It depends on what your want, more comfort or better grahpics?

1. First Steps (preinstalled on meta) -> Will teach your the basics of VR in a fun way. It takes about 20 minutes. It has a shooter mini-game and a dance mini-game after the main tutorial, nothing wow, but it teaches you the basics.
2. Population One: Free to Play -> The PUBG of VR and is free to play. You know how PUBG is played? with 100 players on a map and the winner is the last surviving team or player? Population One is exactly that except in VR, you will have to aim the gun yourself. It also has a tutorial to teach you more about shooters in VR.
3. Resident Evil 4 VR -> This one you need to buy, but most Meta Quest 2/3 come with this game for free. Like when you buy a PC graphics card and get a game for free because of it. With Resident Evil 4 already a classic, only good things could come from this game being made into VR. It's your basic singleplayer shooter adventure game.
4. Echo VR -> Free to play. Youtube "Enders Game - Battle Room", this game is literally that. You are in a 0 gravity environment and play a sort of football game. Be careful, it gets far more disorienting than other VR games, because you have no concept of up and down here.
5. Battle Talent/Blade and Sorcery/Hellsplit Arena/Hellish Quart -> The "swords fight" games. Battle Talent is free to play. Blade and Sorcery is the most moddable game, you can literally play Star Wars with jedi and force powers in this with the Outer Rim mod. While Hellsplit Arena is not the most moddable but has the best graphics out of all 3. While Hellish Quart is focused on dueling.
6. Epic Roller Coaster -> Free to play. Yes, you can Google rollectoaster 360* in Youtube VR, but it's not the same thing, trust me. The experience is far deeper here.
7. Contractors VR -> The Counter-Strike of VR. Has both Steam & Meta versions.
8. Medal of Honor: Above and Beyond / Sniper Elite VR / Warhammer 40:000 Sisters of Battle -> The Call of Duty of VR. Has both Steam & Meta versions. While Sniper Elite VR is a good alternative. While Warhammer 40:000 Sisters of Battle is a futuristic Si-Fi alternative with laser guns, melee weapons and such.
9. After the Fall -> The Left 4 Dead of VR. Has both Steam & Meta versions.
10. Chat VR/Rec Room/Big Screen -> Top 3 most popular chat apps. You can do anything in these games. Talk with people, play mini-games, and so on.
11. Workout VR -> Free but limited content free. You can literally use the VR to work out.
12. PokerStars VR -> Free. It's not just poker, you are in a full casino with other players. One player asked me for money because he lost it all on roulette. 10/10 for realism.
13. Youtube VR -> Free. Just Youtube but in VR.
14. Mission ISS -> Free. A game made by NASA. You explore a real-life space station. It has 0 gravity just like Echo VR but there is no competition here.
15. Box: Creed: Rise to Glory / Thrill of the Fight -> Want to try boxing? You have 2 great options. Creed Rise to Glory is more flashy/arcade but Thrill of the Fight is more realistic. Professional Boxers used Thrill of the Fight to train.
16. The Walking Dead Saints & Sinners -> This game is amazing. While After the Fall is also a zomibie game a lot like Left 4 Dead. This one is not like Left 4 Dead.
17. Rick and Morty: Virtual Rick -> A short but very fun game about Rick & Morty.
18. Superhot VR -> A shooter game with a great concept, time only moves when you move, bullets included, so you can stop and think all your actions, or act like Neo from Matrix.
19. Hitman: HITMAN World of Assassination / Skyrim VR / Fallout 4 -> Hitman feels like the kind of game that was made for VR. Anything you can think about in Hitman you can do here. While Skyrim and Fallout 4 are also great in VR. But I think Hitman gets the cake here.
20. Theif Simulator -> The ultimate Romanian experience in VR.
21. Phasmophobia / Inside the Backrooms -> You like horror? both of these game can be played either on PC or in VR. Phasmophobia is very replayable while Inside the Backrooms is not as replayable but still a good horror experience, both can be played in co-op with up to 4 players.
22. Green Hell / Sons of the Forrest -> You like survival in the woods kind of games? If you have seen the Lost series this is exactly that but in VR. Green Hell was created with VR in mind, so it has more options, but Sons of the Forrest or the previous game simply the Forest can be played in co-op with up to 4 people, they don't have to have VR.
23. Vader Immortal 1/2/3 -> A fun adventure Star Wars game. Short but fun.
24. Subnautica -> Already a great game based on water. It has VR implementation.
25. Spider-man Far From Home VR -> Spider-man and VR, do I need to say more?