Feel free to speak about your favorites, recommend games to other users and anything else you can think of. My rationale for my favorites is the following (I am not a very good writer so bear with me):
Planescape Torment: Interesting setting which I feel is drug-fueled to an extent, great gritty atmosphere, the writing is very good and the narrative is extremely interesting and well done. Go blind and you won't regret it.
Terraria: The game has a lot of flaws (and I prefer the exploration focus before hardmode more than the boss rush), but I have played it a ton of times alone, or with my gf, or with friends so it is my comfort game and I can always relax when playing it. Also, he Thorium mod is a pretty good content mod that stays true to the spirit of the game.
FFXIV: Shadowbringers: It's the climax of the whole story of FFXIV, where almost all of the mysteries are resolved, the plotlines converge and the main antagonists are confronted and explored. I love the setting, the enemies and the lore of the First as a whole, and the story if full of emotion and more thematically rich than one would expect, with a part of the game being a direct parallel of the first world during climate change, and it involves positively if naively portrayed class struggle.
ZeroRanger: Besides the amazing aesthetic, soundtrack and the good gameplay (two of the bosses are some of my favorite of all time), the game blends the story with every aspect of the gameplay seamlessly and it perfectly executes the Buddhism theme in ways I cannot explain without spoiling you. It also has its fair share of emotional moments, and is the perfect mecha anime-like game imo. OFF: Fucked up surreal RPG maker game with a unique aesthetic and disturbing atmosphere and soundtrack. The story has many interpretations and it makes great use of the gaming medium in a meta way to make you feel things. It's probably the most artistic game I have ever played.
Trails in the Sky trilogy: I used the 3rd for my 3x3 since it is the one that impacted me the most emotionally due to the amazing character writing and the emotional journey of the protagonist, but the whole trilogy is the peak of JRPGs for me, with a very fun combat system, amazing music, characters and an interesting setting with great worldbuilding. Some dislike it due to being slower plot-wise than games like Final Fantasy, but that just gives the characters and the setting time to be fleshed out, making you much more invested when shit actually goes down. The portrayal of the nationalist antagonists and the politics as a whole are lib, but in the face of everything else that makes the games good I can easily ignore it.
Hollow Knight: This is pretty much the perfect platformer in all aspects except the music which is very good but not exactly my style. The aesthetic, exploration and bosses are all amazing and I thoroughly enjoyed my time with it.
Katamari Damacy: Has a very unique style of gameplay and humor which accompanied with the great Shibuya-kei soundtrack makes for a great stress reliever game. The final level is something to behold as well (I won't spoil you).
These games have become part of me (sorry for the cheesiness), and if you haven't played them you are doing yourself a disservice.
Missionforce: Cyberstorm: Released in 1996, this game was overshadowed by a plethora of RTS games that were more popular than turn based strategy. I still find myself coming back to this game decades later and find out new things each time. Cyberstorm is a turn-based strategy game where players use fully customizable mechs to defeat a rogue AI. You can change everything down to what type of engines your mechs use or the reactor used to power them.
WarCraft III: One of the best RTS games ever made. WarCraft 2 has a special place in my heart, but WC3 was everything we wished we had.
Dragon Quest: Dragon Warrior Monsters was the first title that introduced me to this series. I could probably put any Dragon Quest game here. I've beaten almost every game in the series. Monsters, however, is my favorite due to its Pokémon mechanics combined with the dungeon crawler the series is famous for.
Warhammer: Vermintide 2: Co-op shooters are nothing new, but VT2 takes the cake. It's amazing the devs are still putting out content for this game. Not only is it a fantastic Warhammer Fantasy title, it's an incredibly deep and complex co-op survival game due to its focus on melee combat. There are ranged weapons of course, but ammo is limited. The multiple game modes have kept the game fresh, especially the Chaos Wastes and recently added PvP.
Diablo II: Greatest action RPG of all-time. It's a shame Diablo 3 has better player vs. monster gameplay because D2 has the superior PvP. It's an isometric, 2D fighting game that would have made a great MOBA but Blizzard doesn't realize what they had.
Mount & Blade: Warband: I actually don't play the main game, all my hours are exclusively from one mod: Warsword Conquest. Mount and Blade is basically Battlefield 1942 if it were set in the Middle Ages. This Warhammer Fantasy themed total conversion has minotaurs, vampires, magic spells, castles, dwarven riflemen, and more. Every faction from the tabletop wargame is here and then some with most races playable. It's constantly getting updates despite the modders doing all the work without getting paid for it due to bullshit copyright issues.
Tactics Ogre: The Knight of Lodis: Like Cyberstorm, I keep coming back to this game decades after it came out. It's the superior Final Fantasy Tactics/Fire Emblem/Advance Wars strategy game with a great story, great graphics (despite its age), and all kinds of customization/player choices.
Against the Storm: If you've ever played an RTS, then kept an enemy unit alive just so you could city build/gather all the resources/research everything/etc. then you'll love Against the Storm. This roguelike city builder is exactly like what I described, but it incentivizes you to move on to the next city. Players are in charge of building a settlement surrounded by hostile wilderness where they have to prepare for massive rainstorms each year in order to survive. What's also neat is how much the game emphasizes pacifist choices over violence.
Into the Breach: Another turn based mecha tactical game, Into the Breach is Subset Games' follow-up to Faster Than Light. Players are tasked with defeating kaiju as they attack cities. What's interesting is how there's little hidden information. Players know exactly how enemy kaiju will attack and each turn is a puzzle where you try to protect the power grid. This game is extremely challenging with deep mechanics despite its simple appearance.