Other free games.

[Unless]

So I used to have a bad habit of buying game bundles just to get one game I want at a reduced price. There are some keys here, and this'll be different from a robot's thread in that there will be different games, and also there won't be detailed descriptions beside each of the games because ya'll want a single say.

Anyways, on to the list.

Keys

Games

1000 Amps (Steam) [Windows / Mac] 
The 39 Steps (Steam) [Windows / Linux / Mac] *
A Virus Named TOM (Steam) [Windows / Linux / Mac]
Burnout Paradise: The Ultimate Box (Origin) [Windows] 
Circuits (Steam) [Windows / Linux / Mac]
Collateral (Desura) [Windows] 
Command & Conquer: Red Alert 3 (Origin) [Windows] 
Company of Heroes Complete Edition (Steam)  [Windows, Mac]
Company of Heroes 2 (Steam)  [Windows, Linux, Mac]
Crysis 2 Maximum Edition (Origin) [Windows] 
Dead Space 3 (Origin) [Windows] 
Fly'N (Steam) [Windows]
Freedom Planet (Steam) [Windows] 
Galactic Arms Race (Steam) [Windows] 
Garshasp: The Monster Slayer (Desura) [Windows]
Hexcells Plus (Steam) [Windows / Linux / Mac] 
NEO Scavenger (Desura) [Windows / Linux / Mac] *
Not The Robots (Steam) [Windows / Linux / Mac]
Oil Rush (Steam) [Windows / Linux / Mac] 
Pressured (Steam/Desura) [Windows] 
QuestRun (Steam) [Windows / Mac] 
The Samaritan Paradox (Steam & Desura) [Windows / Linux] †
Spate (Steam) [Windows / Linux / Mac] 
Strategic War In Europe (Steam) [Windows] *
Sweet Lilly Dreams (Steam) [Windows] 
Unearthed: Trail of Ibn Battuta - Episode 1 (Steam) [Windows / Mac] 
Warhammer 40,000: Dawn of War - Game of the Year Edition (Steam)

* It's been years since I bought these and can't remember why I reached this conclusion, but it's possible these three keys won't work.
† One copy for Steam and another for Desura.


DLC

Batman: Arkham Origins DLC (Steam)
Gotham City Impostors: Professional Kit (Steam)
Guns and Robots: Terminator Pack (Steam)
The Lord of the Rings Online: Steely Dawn Starter Pack (Steam)
Red Faction: Armageddon Path to War DLC (Steam)




DRM-free

[spoiler]The 39 Steps [Windows / Linux / Mac]
Age Of Wonders [Windows]
Age Of Wonders: Shadow Magic [Windows]
Al Emmo and the Lost Dutchman's Mine [Windows]
Alcarys Complex [Windows / Linux / Mac]
Always Sometimes Monsters [Windows]
Amnesia: The Dark Descent [Windows / Linux / Mac]
Arcane Worlds [Windows]
Attractio [Windows / Linux / Mac]
Auditorium [Windows]
Avadon: The Black Fortress [Windows / Linux / Mac / Android]
Avernum: The Great Trials Trilogy [Windows / Mac] [HB/G]
Awesomenauts [Windows / Linux / Mac] (offline only)
Bad Hotel [Windows / Linux / Mac / Android]
Bad Smell [Windows / Mac]
BasketBelle [Windows / Mac]
Beat Hazard Complete  [Windows / Linux / Mac / Android]
Beneath a Steel Sky [Windows / Mac] 
Beyond Divinity [Windows]
Bioshock [Windows]
BIT.TRIP RUNNER [Windows / Linux / Mac]
BIT.TRIP Presents... Runner2: Future Legend of Rhythm Alien [Windows / Linux / Mac]
Black Shadows [Windows / Mac]
Bleed [Windows / Mac]
Blocks That Matter  [Windows / Linux / Mac]
BoxesWithGuns [Windows]
Boximals Bounce  [Windows / Mac]
Braid [Windows / Linux / Mac]
Brütal Legend [Windows / Linux / Mac]
Canabalt [Windows / Linux / Mac / Android]
Capsized [Windows / Linux / Mac]
Cherry Tree High Comedy Club [Windows]
Chopper Mike [Windows / Mac]
Cogs [Windows / Linux / Mac / Android]
Crayon Physics Deluxe [Windows / Linux / Mac / Android]
Crazy Plant Shop [Windows]
Dangerous Insects [Windows / Linux]
Data Jammers: FastForward [Windows]
David [Windows / Mac]
Dawn of Fantasy: Kingdom Wars [Windows]
Deadlight [Windows]
Dear Esther [Windows / Linux / Mac]
Defender's Quest: Valley of the Forgotten [Windows / Linux / Mac]
Divine Divinity [Windows]
Doctor Who: Legacy [Android]
Dragonsphere [Windows / Mac]
Dreamscape [Windows]
Dynamite Jack [Windows / Linux / Mac / Android]
Eets Munchies [Windows / Linux / Mac]
Eleusis [Windows]
English Country Tune [Windows / Linux / Mac]
Entropy [Windows]
Escape Goat 2 [Windows / Linux / Mac]
Ethan: Meteor Hunter [Windows]
Eufloria HD [Windows / Linux / Mac / Android]
Face Noir [Windows]
Faerie Solitaire [Windows / Mac]
Fairy Bloom Freesia [Windows]
Fallout [Windows / Mac]
Fallout 2 [Windows / Mac]
Fallout: Tactics [Windows / Mac]
FEZ [Windows / Linux / Mac]
Final Slam 2 [Windows]
Finding Teddy [Windows / Linux / Mac]
Fish vs. Crabs [Windows / Linux / Mac]
Fleet Buster [Windows]
FTL: Faster than Light [Windows / Linux / Mac]
GEARCRACK Arena [Windows]
Full Mojo Rampage [Windows]
Gearcrack Arena [Windows]
Gentlemen! [Windows / Linux / Mac]
Gimbal [Windows]
Guacamelee! Gold Edition [Windows / Linux / Mac]
HOARD [Windows / Linux / Mac]
Hotline Miami [Windows / Linux / Mac]
Incredipede [Windows / Linux / Mac / Android]
Intrusion 2 [Windows / Linux / Mac]
Joe Danger 2: The Movie [Windows / Linux / Mac]
The Journey Down: Chapter One [Windows / Linux / Mac]
Journey of a Roach [Windows / Mac]
King's Bounty: The Legend [Windows / Mac]
Knytt Underground [Windows / Linux / Mac]
KRUNCH [Windows / Linux / Mac]
LightFish [Windows / Linux / Mac]
LIMBO [Windows / Linux / Mac]
Legend of Dungeon [Windows / Linux / Mac]
Legend of Grimlock [Windows / Linux / Mac]
Lilly Looking Through [Windows / Mac]
Little Inferno [Windows / Linux / Mac]
Lone Survivor [Windows / Linux / Mac]
Low Light Combat [Windows / Linux / Mac] 
Luna's Wandering Stars [Windows / Mac]
Lure of the Temptress [Windows / Mac]
Machinarium [Android]
MANOS: The Hands of Fate [Windows]
Mark of the Ninja [Windows / Linux / Mac]
Mechanic Escape [Windows]
Metal Planet [Windows]
Millennium 2 - Take Me Higher [Windows]
Miner Wars 2081 [Windows]
Mitsurugi Kamui Hikae [Windows]
Multilytheus [Windows / Mac]
Mutant Mudds [Windows]
NEO Scavenger [Windows / Linux / Mac]
NightSky [Windows / Linux / Mac / Android]
Not The Robots [Windows / Linux / Mac]
OddPlanet [Windows]
Oddworld: Abe's Oddysee [Windows]
Oddworld: Abe's Exoddus [Windows]
Oddworld: Stranger's Wrath HD [Windows]
Oil Rush [Windows / Linux / Mac]
OIO [Windows / Mac]
Paper Sorcerer [Windows / Linux / Mac]
Papo & Yo [Windows / Linux / Mac]
Paranautical Activity [Windows / Linux / Mac]
Party of Sin [Windows]
Pester [Windows]
Pineapple Smash Crew [Windows]
Pitiri 1977 [Windows]
Proteus [Windows / Linux / Mac]
Psychonauts [Windows / Linux / Mac]
Puddle [Windows / Linux / Mac]
Pulse Shift [Windows]
QWOP [Android]
Really Big Sky [Windows]
ReignMaker [Windows / Linux / Mac]
Renga Samurai Shogun! [Windows]
Reus [Windows / Linux / Mac]
Risk of Rain [Windows / Linux / Mac]
Rocketbirds: Hardboiled Chicken [Windows / Linux / Mac]
Rot Gut [Windows]
The Samaritan Paradox [Windows]
SanctuaryRPG [Windows]
Scoregasm  [Windows / Linux / Mac]
Selknam Defense [Windows / Mac]
Shank 2 [Windows / Linux / Mac]
Solar 2 [Windows / Linux / Mac / Android]
Soulbringer [Windows]
Soulcaster: Book I [Windows / Linux / Mac]
Soulcaster: Book II [Windows / Linux / Mac]
Spate [Windows / Linux / Mac]
Spirits [Windows / Linux / Mac]
Splice [Windows / Linux / Mac / Android]
Splotches [Windows] 
Stacking [Windows / Linux / Mac]
Stonerid [Windows]
Storm over the Pacific [Windows]
Streets Of Chaos [Windows]
Strike Suit Zero [Windows / Linux / Mac]
 DLC: Raptor [Windows / Mac]
 DLC: Heroes of the Fleet [Windows / Mac]
Super Hexagon [Windows / Linux / Mac / Android]
Super Meat Boy [Windows / Linux / Mac]
Superbrothers: Sword & Sworcery EP [Windows / Linux / Mac / Android]
Surgeon Simulator 2013 [Windows / Linux / Mac]
Survivor Squad [Windows / Linux / Mac]
Swords & Soldiers HD [Windows / Linux / Mac / Android]
Talisman Prologue [Windows]
Teen Agent [Windows / Mac]
Tesla Effect: A Tex Murphy Adventure [Windows / Mac]
Thomas Was Alone [Windows / Linux / Mac]
Tiny & Big in Grandpa's Leftovers [Windows / Linux / Mac]
To the Moon [Windows / Linux / Mac]
Toki Tori 2+ [Windows / Linux / Mac]
Tower of Elements [Windows / Mac]
Treasure Adventure Game [Windows / Mac]
Trine 2: Complete Story [Windows / Linux / Mac]
Type:Rider [Windows / Linux / Mac]
Tyrian 2000 [Windows / Mac]
Ultima IV: Quest of the Avatar [Windows / Mac]
Ultimate Worlds of Adventure 2: Martian Dreams [Windows / Mac]
Ultratron [Windows / Linux / Mac]
Unearthed: Trail of Ibn Battuta - Episode 1 [Windows / Mac]
UNMECHANICAL [Windows]
Vincere Totus Astrum [Windows]
A Virus Named TOM [Windows / Linux / Mac]
Waking Mars [Windows / Linux / Mac / Android]
Warsow [Windows / Mac]
Windforge [Windows]
The Witcher 2: Assassins of Kings [Windows / Mac]
Worlds of Ultima: The Savage Empire [Windows / Mac]
X-COM: Apocalypse [Windows]
X-COM: Enforcer [Windows]
X-COM: Interceptor [Windows]
X-COM: Terror from the Deep [Windows]
X-COM: UFO Defense [Windows]
You Are Not A Banana: Chapter 1 [Windows / Mac]
Yrminsul [Windows / Linux / Mac]
Zen Bound 2 [Windows / Linux / Mac / Android] [/spoiler]

I can give the installation files or the .torrent for the DRM-free games, and there are different files for each OS. I got these (almost?) all from Humble Bundle. If you don't specify I'll assume you want the torrent file for Windows.