Games I haven’t seen mentioned yet:

• Fez - cute little 2D/3D platformer. It’s amazing and very wholesome
• Stalker: Shadow of Chenrobyl - dunno what exactly is it, perhaps the settings and the grit, but it has a special place in my heart. It’s about average FPS, but not too long and for me enjoyable
• F.E.A.R. - very good FPS, with amazingly scripted enemies, decent horror elements (not compulsory - you might miss some of them if you’re not looking).
• Prince of Persia: Warrior Within - for me the best 3rd person action adventure ever. Best combat hands down (or head, or torso, you choose), streamlined blade dance at your fingertips. You play with your enemies, and you get many tools. There are some locked camera issues.
• Touhou: Lost branch of time - If you liked Slay the Spire, but wished for colorful mana, this is the game for you. It has anime artstyle, I usually focus on the cards, though it might turn some people off
• Dota 2 - Dunno if it was mentioned and I didn’t see, but the mechanics are absolutely amazing, the things the game lets you get away with are incredible. 10/10, but other people might bring your experience down. Specially friends. Can play against custom (workshop) bots. Still takes too long to git gud. I studied the game for 10 years and still sucked.
• Divinity 2: Original Sin - also haven’t seen a mention, everybody talks about BG3, I haven’t yet played it, but D2:OS was also a masterpiece. Haven’t played a lot of TRPGs, this was a blast, with easily set up multiplayer. Played through it twice completely, with many abandoned runs.
• CS 1.6 - remember that? I lost my childhood to that. They don’t make counter strikes this good anymore.
• Synthetik - top-down rougelike shooter, with amazing weapons and physics and classes and enemies and mechanics and 2 person multiplayer
• Dwarf Fortress - the real objectively best game :D strategy simulation of the 3D box world, predecesor to both Minecraft and Terraria, but with A LOT more sand in your box. They are still extending it. And it’s on Steam if you want a UI.
• Terraria (Calamity mod) - Terraria is obviously a great game, but what makes it 20/10 is the mods. Calamity specifically. Tripple the content, 5x the difficulty (20x if you try Infernum), amazing multiplayer experience. Don’t install Infernum if you haven’t beaten at least Revengeance on Calamity. Trust me, it will fuck you up.