I'm buying the following card sets for Gems or TF2 keys:

1 Set needed:
Astro Emporia
Blaite
Data Hacker: Corruption
Kathy Rain
Riot of the numbers
Square n Fair

2 Sets needed:
1953: NATO vs Warsaw Pact
AI: Rampage
BARRIER X
Balloon Blowout
Beerman
Bermuda
Brütal Legend
CUBOTS - The Origins
Deus Ex: The Fall
Eron
Farming World
Final Dusk
Forge
Guardians of Orion (Phase 2)
Gunnheim
Iron Sea Defenders
Leap Up no jutsu
Legends of Eisenwald
MURI
Mind Spheres
Morphine
Not without my donuts
POSTAL 2
Pinga Ponga
Power-Up
Putrefaction
RADical ROACH Remastered
Shadow Complex Remastered
Shot In The Dark
Showtime!
Slash It
Splatter - Zombiecalypse Now
Stargazer
Strategic War in Europe
Tesla Breaks the World!
The Bureau: XCOM Declassified
The Lost Crown
The Sacred Stone: A Story Adventure
The Walking Dead
Three Fourths Home: Extended Edition
Timberman
Tribloos 2
Winter Novel

3 Sets needed:
! That Bastard Is Trying To Steal Our Gold !
10,000,000
1954 Alcatraz
A-Gents
ABC Coloring Town
ABO MANDO
AGON - The Mysterious Codex (Trilogy)
Abyss Odyssey
AoF World Online
Avoid Sensory Overload
BIT.TRIP CORE
Bastion
Bear With Me
BioShock Infinite
BioShock Remastered
BlastZone 2
BloodRayne 2
But to Paint a Universe
Call of Duty: Black Ops III
Chess Knight 2
Chompy Chomp Chomp
Chronology
Clandestinity of Elsie
Cyto
Dashy Square
Dead Space (2008)
Dead Synchronicity: Tomorrow Comes Today
Deadlight
Defense Grid: The Awakening
Depth Hunter 2: Deep Dive
Detective Case and Clown Bot in: Murder in the Hotel Lisbon
Deus Ex: Human Revolution - Director's Cut
Divide by Sheep
Europa Universalis III
Evolve Stage 2
Fantastic 4 In A Row 2
Fear Equation
Flix The Flea
For Honor
Fortix
Frozen Synapse
Game Type
Gryphon Knight Epic
Gunslugs
Hacker Evolution - Untold
Heileen 2: The Hands Of Fate
Heileen 3: New Horizons
House of Caravan
Into the Void
Kick Ass Commandos
Killing Floor 2
Kingdom Wars 2: Battles
Koala Kids
LOVE
LYNE
Last Days
Leviathan: The Last Day of the Decade
Life is Feudal: Your Own
Life is Hard
Little Racers STREET
METAL GEAR SOLID V: THE PHANTOM PAIN
MURDERED: SOUL SUSPECT™
Mad Max
Mahsung Deluxe
Mark of the Ninja
Metal Planet
Metro 2033 Redux
Metro: Last Light Complete Edition
Metro: Last Light Redux
Millennium 2 - Take Me Higher
Mosaics Galore
Murder Mystery Adventure
Mystery Of Rivenhallows
Neverending Nightmares
Nomad
OMG Zombies!
Okhlos: Omega
Olympia Rising
Oozi: Earth Adventure
Our Nation's Miner
POSTAL
Painkiller Hell & Damnation
Parcel
Parkan 2
Polygon Attack
Pool Nation
Porcunipine
Post Master
Primal Carnage: Extinction
Prime World: Defenders
Puppy Dog: Jigsaw Puzzles
Quest for Infamy
Raft
Real World Racing
Rescue Team 5
Rising Storm/Red Orchestra 2 Multiplayer
Rome: Total War
SUPERHOT
Saints Row IV
Scott in Space
Scourge: Outbreak
Sledgehammer / Gear Grinder
Snuggle Truck
Starship Annihilator
Statues
Stick It To The Man!
Street Warriors Online
Stronghold Crusader HD
Stronghold HD
Stronghold Legends
Super Cyborg
Super Lemonade Factory
Sweet Lily Dreams
Syberia
Syberia 2
System Shock 2
The Blackwell Legacy
The Body Changer
The Dwarf Run
The Elder Scrolls V: Skyrim
The Evil Within
The Lost Battalion: All Out Warfare
The Mean Greens - Plastic Warfare
Tom Clancy's Rainbow Six Siege
Toybox Turbos
Trine
Ultra Street Fighter IV
Unrest
Wallpaper Engine
Warhammer 40,000: Dawn of War II
White Noise Online
XCOM: Enemy Unknown
You Are Not a Banana: Better Edition
Z
Zombie Tycoon 2: Brainhov's Revenge

4 sets needed:
12 Labours of Hercules IV: Mother Nature
9 Clues: The Secret of Serpent Creek
A Fistful of Gun
Abrix the robot
After The End: The Harvest
Age of Empires II (2013)
Age of Empires® III (2007)
Age of Fear: The Undead King
Age of Wonders III
Airscape: The Fall of Gravity
Akane the Kunoichi
Al Emmo's Postcards from Anozira
Alien Shooter 2 Conscription
Archeblade
Arma Tactics
Army of Tentacles: (Not) A Cthulhu Dating Sim
Avalon Lords: Dawn Rises
BATTALION: Legacy
Back to Bed
BanHammer
Batman™: Arkham Origins
Belladonna
BioShock 2 Remastered
BlackEye
Blackguards
BlazBlue: Chronophantasma Extend
BloodRayne 2: Terminal Cut
Blue Rose Reprise
Boson X
Bound By Flame
Brothers - A Tale of Two Sons
Burgers
Call of Duty: Ghosts - Multiplayer
Call of Duty: WWII
Canabalt
Cave Coaster
Company of Heroes
Counter-Strike Nexon: Studio
Crash Wheels
Crimson Sword Saga: The Peloran Wars
CrossCode
Cthulhu Saves the World
Cubemen 2
Damned
Darkest Dungeon®
Dead Island: Epidemic
Dead Space 2
Deadly 30
Deadly Premonition: The Director's Cut
Deep Dungeons of Doom
Dementium II HD
Desert Ashes
DmC Devil May Cry
Double Dragon Trilogy
Dungeons 2
E.Y.E: Divine Cybermancy
Eleusis
Enigmatis 2: The Mists of Ravenwood
Enigmatis: The Ghosts of Maple Creek
Enola
Ether Vapor Remaster
Fallen Enchantress: Legendary Heroes
Far Cry 5
Far Cry Primal
Farming Simulator 19
Flower Shop: Winter In Fairbrook
Freedom Fall
Frostpunk
Galactic Civilizations III
Gauntlet™
Girlfriend Rescue
Girls Like Robots
Go! Go! Nippon! ~My First Trip to Japan~
Grim Legends: The Forsaken Bride
Hamilton's Great Adventure
Hazard Ops
Hearts of Iron III
Heavy Bullets
Hero of the Kingdom II
Hold your houses
Horizon
Horizon Shift
Hotline Miami
House of 1,000 Doors - Family Secrets
House of 1000 Doors: The Palm of Zoroaster Collector's Edition
HyperRogue
Hyperspace Pinball
I'm Titanium
Indie Game: The Movie
Infinite Space III: Sea of Stars
Jack Lumber
Journey of a Roach
Just Cause 3
Kaiju-A-GoGo
Kairo
Kingdom Wars
Kingdom: Classic
Ku: Shroud of the Morrigan
LIMBO
Ladra
Lara Croft and the Temple of Osiris
Lethal League
Magnetic By Nature
Master Reboot
Medieval Defenders
Miracle Fly
Mirror's Edge
Monster Loves You!
Mordheim: City of the Damned
Mother Russia Bleeds
Mount & Blade
Neon Chrome
Nex Machina
Nimble Quest
Ninjahtic
Nuclear Dawn
ONE PIECE PIRATE WARRIORS 3
OTTTD
Obludia
Office Battle
Oik 2
Oknytt
Onikira: Demon Killer
Optika
Penny Arcade's On the Rain-Slick Precipice of Darkness 4
Permute
Pineview Drive
Pirate Pop Plus
Pitiri 1977
Pixel Piracy
Pixel Survivors
PixelJunk™ Monsters Ultimate
Platypus
Plazma Being
Poly Bridge
Project Highrise
QuestRun
RIVE
Race.a.bit
Radium
Raywin
RefleX
Relaxation balls
Remember Me
Residue: Final Cut
Revenge of the Titans
Reventure
Rise of the Tomb Raider
Risen
Risk of Rain (2013)
Rivals of Aether
Rock of Ages
Rooks Keep
Ryse: Son of Rome
SOMA
STRAFE: Gold Edition
Saints Row: Gat out of Hell
Sarcophag
School Bus Fun
See No Evil
Shelter 2
Sheltered
Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Sickness
Sins of a Solar Empire: Rebellion
Slender: The Arrival
Slime Rancher
Sniper Elite
Sniper Elite 3
Sniper Elite 4
Sniper Elite: Nazi Zombie Army
Sniper Elite: Nazi Zombie Army 2
Soul Gambler
Space Run Galaxy
Spectraball
SpellForce 2 - Demons of the Past
StarDrive
Stardew Valley
Starlaxis Supernova Edition
State of Decay: Year-One
Stay Alight
Stone Tales
Storm of Spears
Streets of Chaos
Stronghold 2
Stronghold Crusader 2
Styx: Master of Shadows
Super Sanctum TD
Super Toy Cars
Takedown: Red Sabre
Tales of Maj'Eyal
Talisman: Prologue
Terraria
Tesla Effect
Tharsis
The Banner Saga
The Binding of Isaac
The Campaign Series: Fall Weiss
The Chaos Engine
The Dark Eye: Chains of Satinav
The Deer God
The Fall
The Incredible Adventures of Van Helsing II
The Sexy Brutale
The Shivah
The Showdown Effect
The Talos Principle
The Tape
The Testament of Sherlock Holmes
The Treasures of Montezuma 4
The Uninvited: MacVenture Series
The Vanishing of Ethan Carter
The Vanishing of Ethan Carter Redux
The Witcher 3: Wild Hunt
Thief
This War of Mine
Time Mysteries 2: The Ancient Spectres
Time Mysteries