Tactigamer

Someone's remaking CS:GO in Unreal Engine 5. A short "demo" is available for free to check out the maps and the developer also offers playtests, though you must be a supporter for this. Link is to the discord for more info.
Dev showing more stuff: 
 

Some have said it's Tarkov in space. Well...this is somewhat true except nowhere NEAR as in-depth and advanced. At the moment, there are no super-specific in-depth mechanics that Tarkov contains (i.e. ammunition types), so it's a much more casualized version of the Tarkov "raid" experience. There are space battles and the typical ADS battles in most first person shooters, though you want to grab loot and complete quests and level up in order to get more good things. I've had a ton of fun and looking forward to the full release.
 
Steam Description:
Marauders is a tactical first-person multiplayer looter shooter set in a sci-fi universe. As a space pirate, work solo, or in a squad of up to 3 other players to navigate a hostile battleground, hunt for loot, craft new weapons and gear, and salvage what you’ll need to survive.
System Requirements:
MINIMUM:
Requires a 64-bit processor and operating system
OS: Windows 10
Processor: Intel Core i5-4570, 3.2 GHz or AMD Ryzen 3 1300X, 3.4 GHz
Memory: 12 GB RAM
Graphics: Nvidia GeForce GTX 760, 2 GB or AMD Radeon R9 280, 3 GB
Network: Broadband Internet connection
Additional Notes: Be advised! Marauders is still in development, so those requirements are subject to change before the release!
RECOMMENDED:
Requires a 64-bit processor and operating system
OS: Windows 10
Processor: Intel Core i5-8400, 2.8 GHz or AMD Ryzen 5 2600, 3.6 GHz
Memory: 12 GB RAM
Graphics: Nvidia GeForce GTX 1070, 8 GB or AMD Radeon RX 5700 XT, 8 GB
Network: Broadband Internet connection
Additional Notes: Be advised! Marauders is still in development, so those requirements are subject to change before the release!

So...this apparently is something like the 2nd highest rated game on steam this year? It's...exactly what you would expect. If you enjoy the finer things and life and tedious cleaning...I guess this is for you. 
Steam Description: 
Release the Pressure with PowerWash Simulator! Wash away your worries with the soothing sounds of high-pressure water. Fire up your power washer and blast away every speck of dirt and grime you can find, all with the simple satisfaction of power-washing to a sparkling finish.
 
System Requirements: 
MINIMUM:
Requires a 64-bit processor and operating system
OS: Windows 8 (64-bit) or newer
Processor: Intel i5-760 (4*2800), AMD Phenom II
Memory: 4 GB RAM
Graphics: GeForce GTX 760, AMD R7-260X
DirectX: Version 11
Storage: 6 GB available space
Additional Notes: Requires a 64-bit processor and operating system
RECOMMENDED:
Requires a 64-bit processor and operating system

I haven't played much of this, but I know 2 things. 1. There's a lot of gore and 2. It's got some sexy looking reload animations. The game is a wave survival game where you take out mutants and clones called "Zeds" in waves where between waves you can purchase some new equipment, weapons, armor, etc. This year, they released an updated titled "Tidal Terror" with a bunch of new goodies/DLCs. I've heard it's better as co-op and not a lone ranger...but most things are.
 
EPIC GAMES Description:
In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.
 
System Requirements: 
MINIMUM:
Requires a 64-bit processor and operating system
OS: Win7 64-bit, Win8/8.1 64-bit
Processor: Core 2 Duo E8200 2.66GHz or Phenom II X2 545
Memory: 3 GB RAM
Graphics: GeForce GTS 250 or Radeon HD 4830
DirectX: Version 10
Network: Broadband Internet connection
Storage: 80 GB available space
Additional Notes: UNSUPPORTED HARDWARE: IntelHD Integrated Graphics Chips, 32-bit Operating Systems, NVIDIA ® FleX features require a GeForce ® GTX™ 770 or higher (GeForce ® GTX™ 980 recommended)
RECOMMENDED:
Requires a 64-bit processor and operating system
OS: Windows 10 64-bit
Processor: Core 2 Quad Q9550 2.83GHz or Phenom II X4 955
Memory: 4 GB RAM
Graphics: GeForce GTX 560 or Radeon HD 6950
DirectX: Version 11
Network: Broadband Internet connection
Storage: 100 GB available space
Additional Notes: NVIDIA ® FleX features require a GeForce ® GTX™ 770 or higher (GeForce ® GTX™ 980 recommended)

Reality Mod Discord: https://discord.gg/realitymod

This is Venice Unleashed, the platform used to play Battlefield 3: Reality Mod. If you want to know what the Reality Mod is, well..it's Project Reality 2 but on an updated platform. The game aims to provide a milsim-lite experience (a bit more casual than squad) with large, custom battlefields modified from the original BF3 maps. It's going to be available to the public July 17 2022 into a very early build but will continue to be modified and upgraded over the coming months. It aims to have a large-scale battle of 100+ players with vehicles, airstrikes, and good ole fashioned infantry. Get your gaming on.
Here's the Reality Mod Roadmap/Website, but it runs on Venice Unleashed: https://bf3reality.com
YOU MUST HAVE A LEGAL VERSION OF BF3 PREMIUM INSTALLED FOR THIS TO BE PLAYABLE

Recently, I picked up the game GTFO. If you want a difficult game - this is it. The enemies are deadly, but what really is enjoyable/terrifying is the environment. You never know what lurks around the corner, the ambient sounds bring about a fear of the unknown that provokes the thought "what kind of monster was that?" It can be played alone with bots, but they seem to be a little bit ditsy. I tried 2 player co-op, but that didn't last long. I'd recommend 4 players with good communication and someone that understands what's going on.
 
Good luck out there, prisoner. 
 
 
Steam Description:
GTFO is an extreme cooperative horror shooter that throws you from gripping suspense to explosive action in a heartbeat. Stealth, strategy, and teamwork are necessary to survive in your deadly, underground prison. Work together or die together.

Trepang2 is a thrilling and graphical First-Person Shooter. Dodge bullets, sneak in the shadows, punch, kick and slide while unleashing your deadly gun skills on the bad guys who took everything from you…
You're a psychopath if you enjoy this game.
Steam Description:
Become the ultimate badass in Trepang2: A gory, action-packed FPS set in the distant future. Unleash all hell on your enemies, dodge bullets and leave a trail of destruction in this hardcore and frenetic shooter.
 
System Requirements:
MINIMUM:
Requires a 64-bit processor and operating system
OS: Windows 10 64 bit
Processor: Intel Core i5-2550K or AMD FX-8370
Memory: 8 GB RAM
Graphics: NVIDIA GeForce GTX 760, 2 GB or AMD Radeon HD 7870, 2 GB or Intel Arc A380, 6 GB
DirectX: Version 11
Storage: 35 GB available space
Additional Notes: Low 1080p @ 30 FPS
RECOMMENDED:
Requires a 64-bit processor and operating system
OS: Windows 10 64 bit
Processor: Intel Core i5-7600K or AMD Ryzen 5 2600X
Memory: 8 GB RAM
Graphics: NVIDIA GeForce GTX 1060, 6 GB or AMD Radeon RX 590, 8 GB, or Intel Arc A750, 8 GB
DirectX: Version 11
Storage: 35 GB available space
Additional Notes: High 1080p @ 60 FPS

This mod is attempting to revive the Modern Warfare Remastered PVP scene. Though you have to own the game, it allows for a fairly simple install to give you that feeling you had back in 2007 when you were pwning noobs until 2AM and disparaging a random gamer's mother. They've got the install instructions on the site (which this links to) so you can either set up your own server or play on others with custom rules. And you can unlock everything. Have fun!

Generation Zero is a game I picked up on Steam for 75% off at around $7.00. I haven't played it solo but I did play it with a buddy and MAN...it's a whole lot of fun. What I found most interesting is that it takes a nearly empty environment (much like Fallout 76) but makes it feel alive. I originally wanted to pick this up when it first came out, but saw some poor reviews. However - according to the steam ratings, the game has gotten MUCH better. I'm interested to see what the whole story is in this game. 
 
Steam Description:
Sweden. 1989. When the residents of Östertörn wake to find robots on the rampage, winning becomes living. Alone or with up to three friends, sneak, scavenge and shoot your way to safety across a vast, varied landscape that is as intriguing as it is deadly.

If you like the mission Clean House in Modern Warfare 19, these games may hit the spot. Ready or Not is number one on the list and brings some incredible intensity, though comes with a heftier price (especially if you want content early). Zero Hour, on the other hand, is a less refined experience but is much softer on the budget. Both games are in early access, though are progressing with every update.
If you enjoy that close quarters/CQB/breach and clear style of play and want more of that - these games are what I recommend. 

Ready or Not:  https://www.nexus.gg/tactigamer/ready-or-not
 

Zero Hour: https://www.nexus.gg/tactigamer/zero-hour
 
 
Video: 
 
 

Break Out, Break Through, and Kill Confirmed were made by Jakub 'eelSkillz' Baranowski.
MIT license. https://github.com/JakBaranowski/ground-branch-game-modes/blob/main/license.md
Profile: https://github.com/JakBaranowski

Kill Confirmed (Semi-Permissive) was made by Bob/AT.

Intel Retrieval Counter Assault was made by Hellm (https://www.nexusmods.com/users/135707838).
MIT License: https://opensource.org/licenses/MIT

This is a mod created by Gman228 linked over to the OHD official site for download. Definitely a WIP, but really cool what he's made so far!

Mods used: 
Resistance Mod (LOADS of gameplay changes): https://downloads.fcmodding.com
Apex Reshade Mod: https://www.nexusmods.com/farcry5/mods/33
 

This is the Resistance mod that is no longer available on the Nexus, unfortunately. This unlocks loads of different mods all in one download for Far Cry 5.

This is the Reshade mod that I've used that makes Far Cry 5 look even better. 

Well I've heard all the rant and rave about Arma...but haven't tried it until now.
 
I still don't know what I'm doing. It's complex. Send help. 

World War 3 is certainly one of my favorite games. It's got the best of both worlds - hardcore, tactical shooter elements sprinkled with casual style gameplay. This has got to be some of the best gunplay in an arena shooter I've ever played. 
I'm probably just a fanboy. 
Steam Description:
World War 3 is a tactical online multiplayer FPS where the world is your battleground. Outgun the enemy in thrilling, team-based skirmishes with a huge arsenal of weapons, vehicles, gadgets, and drones at your disposal.
System Requirements:
MINIMUM:
Requires a 64-bit processor and operating system
OS: Windows 10 (x64)
Processor: Intel Core i3-4340K / AMD FX-6300
Memory: 8 GB RAM
Graphics: Geforce GTX 670/ GTX 1650 or AMD Radeon HD 7950
DirectX: Version 11
Network: Broadband Internet connection
Storage: 80 GB available space
RECOMMENDED:
Requires a 64-bit processor and operating system
OS: Windows 10 (x64)
Processor: Intel Core i5 2500k / AMD Ryzen R5 1600X
Memory: 16 GB RAM
Graphics: Geforce GTX 1060 or AMD Radeon R9 390 / AMD RX 580
DirectX: Version 12
Network: Broadband Internet connection
Storage: 80 GB available space

Become fully immersed in the firefight! Onward is a Mil-sim multiplayer first person shooter built for virtual reality. Work closely with your team in the heat of battle and engage in the most realistic combat experience available in gaming today.

The stand-alone mod S.T.A.L.K.E.R. Anomaly aims to be the most stable and customizable experience for fans of the S.T.A.L.K.E.R. games. It's powered by the Monolith 64-bit engine, a custom fork of the X-Ray engine.

Alright, I know what you're thinking. Tactigamer covering Roblox? C'mon man. 
No - for real. This is something worth looking into - at least to follow along during the development. This game is looking so much better than the last time I played it. Previously, the game utilized the typical Roblox models with some sort of operator suits on, but now the models are the typical human models. The game has got some great gunplay, some CRAZY - and I mean CRAZY customization - and some great mechanics!
The game's release is finally here, but it definitely has a long way to go. The optimization currently needs some work and uhm...(this is a big deal) - it's pay to win. Not that you can't do well with the early weapons, but you're definitely able to just buy everything you want as far as attachments go so that you gain an advantage over your enemy. If I wanted to buy a kitted out M4 with the lowest recoil so I could laser-beam my enemies...I could do that. So that's definitely not great.
I don't exactly know how Roblox works when it comes to matchmaking and groups, but it seems like I could only play by myself. I could be wrong - going any further into this would force me to dive into Roblox research, and to be honest - I just think the game is a cool concept. I don't have much of a desire to dive into that. I'm more of a solo guy, anyway, so...there's that.
Check it out with the orange link below (or to the side) and here's the developers twitter to follow along:
 

In my opinion, one of the most underrated first person shooters out there. Fun gunplay, nice weapon customization, and some enjoyable kills. Set in the Tarkov universe and formerly known as Contract Wars.

Start your solo career today! Loot powerful weapons, survive against the competition, and be the one to complete the assignment and extract with the evidence in this thrilling, limited-time event for the multiplayer FPS Nine to Five. Rogue Shift is available April 19-28, play now for free!
 
Usually, the game is a 3v3v3 style of tactical shooter, though this limited time event may be it's future

n Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.

So instead of your knife, you take your syringe out and poke your buddies. 
Author: Chan_ 

NOTE: Link takes you to the Nexus site for the download and more information. 
 
This is where Osama bin Laden was doinked. Super intense with long sight lines in the courtyards. Watch out!
 
Author: Scones