Hi everyone,
I am a FPS and ThirdPS-(like Max Payne series) junkie. I am trying to make a list of overlooked FPS and Third PS that i might have missed to complete my collection. Hopefully, this list will also help other gamers find new games to play. This list is for PC games only. Popular and well known games will not be on the list because everyone already knows about them. I will start the list with a few games that i fortunately found by accident recently. I will review posts at least once a week to update the list. Thanks to everyone who contributes to the list or just visiting.

007 Nightfire
Aliens vs Predator 2 Gold
Alpha Prime
Amid Evil
Area 51
Armed Forces Corp
Battlestrike Series
Bet on Soldier: Blood Sport
Blacksite: Area 51
Blood Stone: 007
Breed
Carnivore Cityscape
Chaser
Chrome 1+2
CIA Operative Solo Missions
Code of Honor Series
Command & Conquer: Renegade
Commandos: Strike Force
Conflict Series
Crimson Metal
Dark Places
Dark Sector
Deadfall Adventures
Deadly Dozen 1+2
Devastation
Doomed
DUSK
Dusk 12
Elite Forces Series
Elite Warriors: Vietnam
Exodus from the Earth
EYE Divine Cybermancy
Firestarter
Forgive Me Father
Generation Zero
Gore: Ultimate Soldier
Gunman Chronicles
Hedon Bloodrite
Hellbound
Hellforces
Industria
Jonathan Kane: The Protector (aka Hidden Agent)
Killing Time
KISS Psycho Circus - Nightmare Child
Kreed 1+2
Last Rites
Line of Sight: Vietnam
Mace Griffin: Bounty Hunter
Made Man: Confessions of the Family Blood
Marine Sharpshooter Series
Monument
Mortyr Series
Nina Agent Chronicles
Operation Matriarchy
Operation Thunderstorm
Pariah
Patriot: A Nation Under Fire
PositronX
Precursors
Prey (original)
Prospekt
Psi-Ops: The Mindgate Conspiracy
Psychotoxic
Putrefaction Series
Redemption: Saints & Sinners
Red Ocean
Royal Marines Commando
SAS Secure Tomorrow
Scorpion Disfigured
Second Sight
Secret Service Series
Severed Steel
Shrine 1+2
SpecOps Series
Stalin Subway 1+2
Starship Troopers
Star Trek: Klingon Honor Guard
Tekwar
Terrorist Takedown Series
The Hell in Vietnam
The Mark
They're Alive
Turning Point: Fall of Liberty
Ubersoldier 1+2
Unloved
Vietcong 1+2
Venom. Codename: Outbreak
Vivisector: Beast Within
Wolfschanze 1+2
You Are Empty
Xenus II: White Gold
XS
Z.A.R.

Necrodome, one of Raven's forgotten titles from the '90s. Has a badass soundtrack to boot.

It's abandonware, so unfortunately that means it's not for sale anywhere, not even GOG, and I hear it's a pain to run on modern systems.

Z.A.R.

Can Arx Fatalis be consider a FPS or more like a hybrid?

Elite Forces WWII Normandy is a Lithtech engine game from the early 2000's that I played as a kid. I bought it again recently and it is decently enjoyable, no 2003 Call of Duty or Allied Assault but for what it is it is fun. I played it before those other games, also, so that probably plays a part in it.

https://www.youtube.com/watch?v=NI1KndC3lKI

The above game runs just fine in 1600x900, so why the footage posted is crappy is hard to say.

CIA Operative Solo Missions, from the same collection that I played Elite Forces on, is a modern FPS (for the time, anyway) that looks pretty primitive and has very limited weapon variety but it too is actually fun. It was made by a few of the original CoD developers, fun-ish fact.

https://www.youtube.com/watch?v=5gm9NmpYS4I

MIA is pretty good budget FPS.
https://www.youtube.com/watch?v=dIP_1kdU9Bg

Alpha Prime is one as well.
https://www.youtube.com/watch?v=dIP_1kdU9Bg

... it's a first person RPG, paying homage to Ultima Underworld, not an FPS.

1st Person:

Project I.G.I.
No One Lives Forever 1+2
Alien vs. Predator 2
Mace Griffin: Bounty Hunter
Pariah
They're Alive
Scorpion: Disfigured (probably jank)
Dusk-12: Deadly Zone
Area-51
Area-51: Blacksite
Red Ocean
The Stalin Subway 1+2 (confirmed jank)
Boiling Point: Road to Hell
Xenus II: White Gold
Precursors
Vietcong 1+2
Rainbow Six series of games
Ghost Recon series of games

3rd Person:

Psi-Ops: The Mindgate Conspiracy
Sanity: Aiken's Artifact
A.I.M.: Artificial Intelligence Machines
A.I.M. 2: Clan Wars
Hard Truck Apocalypse
Made Man
Flying Heroes
Conflict series of games

Thanks for your post. This is a good game, but i consider this a Vehicle Combat game instead of a FPS.

Thanks for the nice list. I saw 3 games that i did not know about [Mace Griffin], [Red Ocean] and [Scorpion Disfigured]. Is [Dusk 12 Deadly Zone] the same as the Dusk 12 sold on Steam? I will update the list soon.

You're welcome, thanks.
Yes, Dusk-12 is the same game, sorry I missed it when I glossed over your list.

Breed
Bet On Soldier: Blood Sport
Front Mission Evolved
War World: Tactical Combat

It has on-foot combat in case your car gets wrecked, but if that still doesn't fill your criteria, then I'll ask what you might consider borderline cases.

It reminds me of a tank sim combat. If it was only 1 or 2 levels of vehicle combat and the rest on foot, like the Battlefield games, then i would definitely include it in my list, but this game is mostly all vehicle combat.