[H]A lot of Bundle keys, Monthly Bundle keys [W] Bundle keys

http://compare2steam.com/
This website is helpful to find out which game is in your library and which one isn't.

[H]Bundle keys
$1 Ride 　...　(with trading cards)
7 Wonders: Treasures of Seven
A grande bagunça espacial - The big space mess 　...　(with trading cards)
Agent Awesome 　...　(with trading cards)
Agent Awesome 　...　(with trading cards)
Albert and Otto 　...　(with trading cards)
Alex Hunter - Lord of the Mind Platinum Edition 　...　(with trading cards)
Alter World 　...　(with trading cards)
Ampersand 　...　(with trading cards)
Blockstorm 　...　(with trading cards)
Bloop 　...　(with trading cards)
Calcu-Late 　...　(with trading cards)
Car Mechanic Simulator 2014
Catch a Falling Star 　...　(with trading cards)
Clergy Splode 　...　(with trading cards)
Commander: Conquest of the Americas Gold
Corrosion: Cold Winter Waiting [Enhanced Edition] 　...　(with trading cards)
Cosmic Dust & Rust 　...　(with trading cards)
Cubetractor
Deep Space Dash 　...　(with trading cards)
Drayt Empire 　...　(with trading cards)
Drive Megapolis 　...　(with trading cards)
Dungeon Journey 　...　(with trading cards)
Eaten Alive 　...　(with trading cards)
Escape Machines
Final Quest 　...　(with trading cards)
Final Quest II 　...　(with trading cards)
Flesh Eaters 　...　(with trading cards)
Freebie 　...　(with trading cards)
Glacier 3: The Meltdown
Gnumz: Masters of Defense 　...　(with trading cards)
GUILTY GEAR XX ACCENT CORE PLUS R 　...　(with trading cards)
Gunspell - Steam Edition
Hare In The Hat 　...　(with trading cards)
Haunted
House of 1,000 Doors: Family Secrets Collector's Edition 　...　(with trading cards)
House of 1000 Doors: The Palm of Zoroaster Collector's Edition
Humanity Asset 　...　(with trading cards)
Invasion 　...　(with trading cards)
Kairo 　...　(with trading cards)
Kivi, Toilet and Shotgun 　...　(with trading cards)
Koi-Koi Japan [Hanafuda playing cards] 　...　(with trading cards)
Kraven Manor
Lup 　...　(with trading cards)
Midnight Carnival 　...　(with trading cards)
Midnight Mysteries: Salem Witch Trials
Mindless Running 　...　(with trading cards)
My Bones 　...　(with trading cards)
Neon Hardcorps 　...　(with trading cards)
New kind of adventure 　...　(with trading cards)
Odysseus Kosmos and his Robot Quest
Odysseus Kosmos and his Robot Quest: Adventure Game
Oniken 　...　(with trading cards)
Orborun
Overlord
Paradise Island 　...　(with trading cards)
Particula 　...　(with trading cards)
Pester 　...　(with trading cards)
Postal 　...　(with trading cards)
Proto Raider
Red Lake
Remnants of Isolation 　...　(with trading cards)
Russian Horror Story 　...　(with trading cards)
Saints Row 2
Sakura Angels 　...　(with trading cards)
Sakura Spirit 　...　(with trading cards)
ShapeShifter 　...　(with trading cards)
Skullgirls 　...　(with trading cards)
Small Town Terrors Pilgrim's Hook Collector's Edition
Spikit 　...　(with trading cards)
Star Chronicles: Delta Quadrant 　...　(with trading cards)
Star Drifter 　...　(with trading cards)
Star Fields 　...　(with trading cards)
Stellar 2D 　...　(with trading cards)
Stigmat 　...　(with trading cards)
Sumo Revise 　...　(with trading cards)
Super Distro 　...　(with trading cards)
Super Duper Party Pooper 　...　(with trading cards)
Super Mega Neo Pug 　...　(with trading cards)
Super Mustache 　...　(with trading cards)
Super Space Pug 　...　(with trading cards)
Terra Incognita ~ Chapter One: The Descendant 　...　(with trading cards)
The Flame in the Flood 　...　(with trading cards)
The Incredible Adventures of Van Helsing: Final Cut 　...　(with trading cards)
The Last Hope
The Story Goes On 　...　(with trading cards)
The Tower Of Elements 　...　(with trading cards)
The Walking Dead: Season 1 　...　(with trading cards)
There's Poop In My Soup 　...　(with trading cards)
THOTH
Tiki Man 　...　(with trading cards)
Timore Inferno 　...　(with trading cards)
Tinboy 　...　(with trading cards)
Turbo Pug 　...　(with trading cards)
Turbo Pug DX 　...　(with trading cards)
Vertical Drop Heroes HD

[H]better games (Don't offer cheap game for those.)
Freedom Force vs. the Third Reich
Husk
Flat Heroes
Morphblade
Samorost 3 　...　(with trading cards)
Verdun 　...　(with trading cards)
Human: Fall Flat 　...　(with trading cards)
Overgrowth 　...　(with trading cards)
Holy Potatoes! We're in Space?! 　...　(with trading cards)
Last Day of June 　...　(with trading cards)
Lost Castle 　...　(with trading cards)
Aviary Attorney 　...　(with trading cards)
Splasher
Uurnog Uurnlimited
Acceleration of SUGURI 2 　...　(with trading cards)
Bear With Me - Collector's Edition
Ken Follett's The Pillars of the Earth 　...　(with trading cards)
Styx: Shards of Darkness 　...　(with trading cards)
Yooka-Laylee 　...　(with trading cards)