Pick a game for me to play - DON'T NEED ANY MORE GAMES ATM, THANKS TO ALL.

Gonna suggest a couple different genres, pick whatever seems appealing to you.

RPG: LISA - Kinda like a darker Earthbound. Probably gonna do another playthrough soon.
Horror: Amnesia: The Dark Descent - Great atmosphere. Play with headphones and the lights out
FPS: Bioshock Infinite - Love the series, and you don't need to play the first 2 games before this one
Twin stick shooter: RUINER - I see you played a little, recommend giving it another shot. Great music, good story, doesn't take too long to finish

I filtered to games we both own, so I could recommend something I've actually played.

You have Armello and haven't played it. That game is pretty awesome. Even better if you can get 3 people to play it with. Learned to play on single player, sometimes I play random multiplayer against whoever, but get the most enjoyment when I can find 3 friends to join a game.

Hollow Knight is a really good Metroidvania style game. It's one of the more difficult ones in that genre though, but it's enjoyable at the same time. You should try it out.

Bad Rats

Battle Chef Brigade - a cooking platformer match3 adventure, very fun you won't see time pass
911 Operator - an original idea, you play an operator who answers emergency calls and you dispatch units
L.A. Noire - a must-play if you like detective games

Zombie Night Terror - fun little puzzle game with pixelated gore.

Life is Strange
Shelter 2

Unless you only want one. Then ignore the second one :D
Good luck and have fun :)

1) Far Cry 4
2) Banished

Witcher 3 Wild Hunt, playing under 10 hours or idle for such time should be considered criminal activity

Witch it!
This game is very fun with other people. If you wanna try it out, send me a friend request and we can even play it together :D

The Darkness 2 is a fun action game with demonic powers.
Subsurface Circular is a great detective game.
Stalker Shadow of Chernobyl is a great first person adventure survival game. Very atmospheric.
Medieval II: Total War might not work perfectly since it's old, but it's a solid strategy title.

How about joining BLAEO and participating to all the challenges ?

Well, there seems to be a distinct lack of Slavic shilling.. but I've got you mi amigo!

You want a game (or four different games) that'll put hair on your chest, vodka on your breath, give you an irresistible squat and more existential dread than you could swing a cat at? Of course you do! Then look no further than Pathologic Classic HD and the S.T.A.L.K.E.R series! It doesn't GET more cheeki breeki than these games! One of them even has the support of a Ugandan warlord, what's not to love about that? And that's not even mentioning his sedated alter-ego's support!

From a list of games that we both have, I suggest Hidden Folks. It is fun and low-stress, and the cheevos are easy to get. :)

1000+ games and doesn't have slime ranchers smh.

AER Memories of Old is a lovely game about flying. There are some little puzzles and running, but mainly flying. Has relaxed and lazy vibe too.

(going from the bottom of your list, the most worthwhile of games, that id personaly play and would suggest, dont play them if you already played them before, unless you mod them alot to change the expierience enough)
Zombie Night Terror
Wrack (optional, not the worst, decent at best)
Worms Clan Wars
Wasteland 2
Warhammer 40.000 Space Marine
The Expendabros
The Darkness 2
System Shock 2 (everyone keeps praising it so it must be good, right?)
Styx: Master of Shadows (if you have any interest in stealth games, be sure do check this out)
Strife: Veteran Edition (optional, looks decent)
Space Run (i dont like space ship games but this one always looked interesting to me and something maybe i would try if i could)
Sniper Elite & Sniper Elite V2
SEGA Mega Drive & Genesis Classics (if you have Streets of Rage 1, 2, 3 and Sonic games, 1, 2, 3,, Golden Axe 1,2,3, and all Shinobi games aswell as Shadow Dancer, please do try them out, the best Genesis games in that collection that exists on steam)
SAS: Zombie Assault 4 (good top down zombie shooter, skip if not interested in that)
Saints Row IV (play the other ones first if you have them, in chronological order, for continuinity)
S.T.A.L.K.E.R.: Shadow of Chernobyl & S.T.A.L.K.E.R.: Clear Sky (worthwhile to mod)
Rise & Shine (sidescrolling shoot em up, if thats your thing, if not, skip)
Resident Evil Revelations / Biohazard Revelations
R.U.S.E. (youre lucky to have this, its removed from steam years ago and everyone seems to love it, you might too if you like strategy games)
Quake Champions (if you like arena shooters, maybe worth checking this out, maybe you will like it but probably not, i got over it)
Punch Club (train a boxing newbie to a boxing champion in a boxer's life manager)
Portal (if you havent yet, now's the time)
Planetary Annihilation: TITANS (its an RTS but on multiple planets you can build on their entirities, colonize, and destroy enemies on other planets)
Paladins (an alright hero team shooter fantasy FPS, might be fun for the first days, weeks, then wear off)
Overlord (if you wanna feel badass, evil and powerfull while controling an army of rabid fun to watch & listen minions, do try this out please)
Metro 2033 (love this game, its fantastic, and you have the original, now unavaivable version, its better than the ''remaster'' please try this)
Max Payne & Max Payne 2: The Fall of Max Payne (3 too if you have it, these are a must)
Left 4 Dead (still has players, if you dont have 2, or even if you do, maybe worth looking into this, best played in multiplayer)
Injustice: Gods Among Us Ultimate Edition (pretty good fighting game, but if youre shit at fighting games like me, you could still try to button mash your way trough the story which is realy good, and the numerous challanges, and the ending of each character trough a gauntlet type of mode, i mean, DC superheroes and villains duking it out, its cool)
Homefront (if you have no games to play and want a...decent at best FPS.... and nothing to do.... try this?)
Hard Reset & Hard Reset Redux
Half-Life, Half-Life: Blue Shift, Half-Life: Opposing Force, Half-Life 2: Episode One, Half-Life 2: Episode Two, Half-Life 2: Lost Coast, Half-Life 2: Deathmatch, (do i realy need to say anything?)
Guacamelee! Super Turbo Championship Edition (kinda looks like a platforming beat em up, could be good if you tried it, seems loved enough)
GRID 2 (GRID 1 is better but if you dont have that, then i guess this will have to do, an alright racing game, skip if youre not too much into racers though)
Grey Goo (the last big budget RTS by former Westwood employes in their new studio name Petroglph Games, not suggesting this if its good, but to just see it, maybe will interest, if it wont, dont bother with anything else then maybe made by them, i feel their prime and glory days since losing C&C are over. They are right now working on the first two C&C games remakes/remasters though, but im not too confiden given how Conan RTS turned out and other games by them....)
Grand Theft Auto III, Grand Theft Auto: Vice City, Grand Theft Auto: San Andreas, Grand Theft Auto: Episodes from Liberty City (please, please, please play these games, IV too if you got it, you can mod all of them too, from better graphics to new sounds, car, weapon models, take your time and please enjoy these fantastic game legends)
Fistful of Frags (check in community hub if theres players ingame, a good decent western FPS if you have litearly nothing else to play)
Double Dragon Trilogy (super old school sidescroll beat em up, if you enjoy beat em ups, try it, be warned, its super old, again)
DEAD OR ALIVE 6 (fighting game, free to play, no stories to expierience [much atleast] if its the free version, not bought version, you can have a very interesting time in this if you do buy the story DLC and play all of them, haha)
Day of Defeat: Source (dont try it if it doesnt have players, but if does, why not)
Cry of Fear (great horror fps with combat i hear, my friend plays it multiple times, do try it)
Crazy Taxi (if you want to waste a few minutes or a couple half hours or so)
Counter-Strike 1.6. (good old CS, second or THE best one)
Contagion (great game, just 1 huge problem, no players, last time i checked anyways)
Carmageddon: Max Damage (newest and most likely last Carmaggedon, check it out if you like racing games that include running over pedestrians and smashing opponent drivers, all 3 of which are viable ways to win a race, the game is very over the top as Carmaggedon should be)
Borderlands: The Pre-Sequel (toted as the worst Borderlands but if its the only one you got.... maybe check it out...?)
Bleed 2 (sidescroll platforming shoot em up, maybe worth your time)
Blackwake (best multiplayer pirate game on pc perhaps, just check if its still played)
BioShock & BioShock Infinite
Binary Domain (good game but a horrible fucked up port from consoles, i never bothered if you can find out how fix the controls, could be worth it, if cant be fixed, dont even try it)
Bastion (probably worth it)
Batman™: Arkham Knight (if you wanna play as batman and his car)
Awesomenauts (very nice 2d sidesroll moba, probably still has some players)
Anomaly Warzone Earth, Anomaly Warzone Earth Mobile Campaign, Anomaly Korea, Anomaly 2, Anomaly Defenders (play these in this order, they are tower ASSAULT games, not defense, assault, the only series of this genres kind, loved the first one, please try them, their unique)
Alien Rage - Unlimited (seems like a good FPS but maybe short)
Alan Wake's American Nightmare (its time to check this shit out man)
60 Seconds! Reatomized (funny and challanging choice game)
Amnesia: The Dark Descent (one of the most praised horror games ever, my friend always plays this, maybe you should now too)
Spec Ops: The Line (you realy, REALY need to play this, like, realy, to get one of a kind expierience that you will never get again or elsewhere, just give it far, far more than just 10 minutes pretty please, i know what you might be thinking but its deceisive, just keep playing it to the end please)
Warface (if you have no more FPSes left, try this, why not, not for me though, tried it, im over it)
Nuclear Throne (i like to think this is a pretty good isometric shooter rouge lite)
Deus Ex: Game of the Year Edition
Black Squad (more FPSes if you cant get enough)
Mad Max
Fallout: New Vegas
Star Wars: Battlefront 2 (Classic, 2005)
Sonic CD
Hotline Miami (please try this, one of the best games ever)
Bully: Scholarship Edition
Team Fortress 2 (used to be good, nowadays? Stay away from it unless you want a class based FPS just very ruined)
Dead Island Definitive Edition (enjoyed the original version, just fuck the sewers man, fuck the servers segments, fuck them so hard man)
Counter-Strike: Source (best CS in my opinion)
Far Cry® 3 (would recommend 2 more though)
Ancient Planet (tower defense if thats your kink)
The Final Station (very interesting game)
Infectonator : Survivors (infectonators is a great fanrchise, say what you will about this game if you try it though)
Fahrenheit: Indigo Prophecy Remastered (honestly this should be expierienced)
Deponia (click adventure story game if you like those, this is a series)
Killer is Dead (Sudo something something studio is super wierd, you want wierd? try this, very gorey though)
Frederic: Evil Strikes Back (music rythm game)
Sanctum 2 (FPS tower defense)
Half-Life 2 (full playtrough please)
Deadlight
Sniper Elite 4
Dungeon of the Endless
The Bureau: XCOM Declassified
SOMA
Gunpoint
METAL GEAR SOLID V: THE PHANTOM PAIN
Company of Heroes 2
Just Cause 3
Kingdom Come: Deliverance
RUNNING WITH RIFLES
Zombie Driver HD
Mortal Kombat X
Shadow Blade: Reload
Stronghold HD
12 is Better Than 6
POSTAL
Z
Left 4 Dead 2
Mercenary Kings
The Stanley Parable
HITMAN™
Shadowrun Returns
DreadOut
Sniper Elite 3
Shadow Tactics: Blades of the Shogun
Borderlands 2
Hotline Miami 2: Wrong Number
RUINER
7 Days to Die
GemCraft - Chasing Shadows
How to Survive 2
Riff Racer
8-Bit Armies
Kingdom Rush
HunieCam Studio
March of the Living
Yakuza 0
Darkest Dungeon®
RESIDENT EVIL 2 / BIOHAZARD RE:2
Far Cry 4
How to Survive
Hitman: Absolution
The Witcher 3: Wild Hunt
Seems like you played enough of the remaining games to know about them. If you want more games, let me know, i know a shit ton more to suggest you, all free ofcourse.