Here is the complete list of all games suggested so far.

Amnesia Custom Stories are listed in the other sticky. Here


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13 Days In Hell
1916 Der Unbekannte Krieg
45 Guys 1 Brain
5 Days a Stranger
6 Days a Sacrifice
7 Days a Skeptic
Abobo's Big Adventure
Ace of Spades
Achilles
Achilles 2
Action Adventure World
Adventure Quest
A Mother's Inferno
Afraid of Monsters: The Dream
Afterfall: Insanity
Alan Wake (Up For Live Streaming)
Alan Wake American Nightmare
Alice Madness Returns
Alien Swarm
Alien VS Predator 2
Aliens:Colonial Marines
All Zombies Must Die!
Alone In The Dark [Counts for the every game in the saga]
Alpha Polaris
Amber: Journeys Beyond
America's Army 3
American McGee's Alice
Amnesia: A Machine For Pigs
Among The Sleep
Amy
Amy II
And Yet It Moves
Anchorhead
Analogue: A Hate Story
Anna
Anne & Beanie
Another World
Ao Oni [HL2 Mod]
Ask The Spirits 2
Archeblade
Area 51
Arma 2
Assassin's Creed [Counts for all games in the saga]
Asylum
Atrocitys: The Revenge
Attack A Zombie
Audiosurf
Azurik: Rise Of Perathia
Bad Mojo
Barbie Horse Adventure
Barista
Barkley Shut Up and Jam: Gaiden
Barrel Smackdown
Barrow Hill: Curse of the Ancient Circle
Bartender - The Right Mix
Batman:Arkham City
Bayonetta
Being One Series
Ben Drowned
Big Rigs: Over the Road Racing
Bionic Commando
Bioshock
Bioshock 2
Bisounours Party [HL2 Mod]
Black Mesa Source
Black & White Light
Blackwell's Asylum
Blackwood Prologue
Bleach M.U.G.E.N.
Blood Drive
Board Game Online
Borderlands
BreadDuck
Breath of Fire [Counts for all the games in the saga]
Bromancing Saga 2
Bully
Burnout Paradise
Burrito Bison Revenge
Call of Cthulhu
Call Of Duty [Counts for all the games in the saga,including Zombies]
Candles
Carnevil
Carrier
Castle Crashers
Castlevania [Counts for all the games in the saga]
Catherine
Cave Story
Centralia [HL2:EP2 Mod]
Cellar Door
Cho Aniki
Chzo Mythos
Class 3 Outbreak
Clive Barker's Undying
Clive Barker´s Jericho
Clock Tower [Counts for all the games in the saga]
Cold Fear
Coma
Combat Pillows
Command & Conquer [Counts for the all the games in the saga]
Condemned
Condemned: Criminal Origins
Command and Conquer: Red Alert
Conker's Bad Fur Day
Contagion
Contra [Counts for all the games in the saga]
Corpse Garden
Corpse Party (PSP)
Corpses Of The III Reich
Covetous
Crazy Fairies
Crazy Pony
Cripple Apocalypse
Crom Oni
Cryostasis
Crysis 1
Crysis 2
Cry Of Fear (Ongoing LP)
Cube: The Game
Cursed Mind
Cursed Mountain
CYPHER
D
DareDevil
Dark [HL Mod]
Dark Fall 3 : The Lost Souls
Dark Messiah
Dark Ocean
Dark Sector
Dark Souls
Darkness Episode 1
Darkness Within 2: The Dark Lineage
Darkness Within: In Pursuit of Loath Nolder
Darksiders
Darksiders II
Darkwatch:Curse of the West
DayZ[Arma 2 Mod]
Deadly30
Deadly Premonition
Dead Frontier
Dead Reckoning
Dead Rising [Counts for all the games in the saga]
Dead Space
Dead Space 2 (Exists on his channel, pretty old LP)
Dear Esther
Death Awaits You
Decay
Decision 2
Dehinged Mind
Deja Vu
Delver
Dementium
Demon's Souls
Don't Shoot The Puppy
Depict1
Derelict
Deru Deru
Desert Nightmare
Desolation: The Stages of Anxiety
Deus Ex
Deus Ex: Malkavian Mod
Deus Ex Human Revolution
Devil's Turning Fork
Diablo 1
Diablo 2 + Expansion
Diablo 3
Dink Smallwood
Dino Crisis
Disaster Report
Distorter
Diver 1
Diver 2
Don't Look Now
DON'T SHIT YOUR PANTS
Dolphyn Olympics 2
Downfall
Doom 3
Dr. Ruth's Game of Sex
Dreamy Rainbow
Duck Hunted
Duke Nukem 3D
Duke Nukem Forever
E.B.O.N.Y.
Echo Night: Beyond
Echoes-Operation StrangleHold
Eclipse
Elasto Mania
Elevator: Source
Elvira II: The Jaws of Cerberus
Energetic
Enola
Epic Mickey
Escape the BoogeyMan
Escape The Bunker: 1944
Eternal Darkness; Sanity's Requiem
Euthanasia
Eversion
Evil Dead
Evil Dead: Regeneration
Everybody Edits
Extreme Paintbrawl
Fancy Pants Adventures 2
Farenheit / Indigo Prophecy [Same game,different names]
Far Cry
Far Cry 2
F.E.A.R 2
F.3.A.R
Feral Heart
Fear Effect
Fable [Counts for all the games in the saga]
Fallout [Counts for every game in the saga]
Fatal Frame [Counts for every game in the saga]
Feeding Frenzy 2
Fester's Quest
Fibrillation
Fiend
Final Fantasy XIII
Final Fantasy XIII-2
First Person Tetris
Fixation
FlatOut: Ultimate Carnage
Floor 10
FlyGuy
Fly Like a Bird 3
Flugratten
Forbidden.exe
Forget Me Not Annie
Fort Zombie
Fortnite
Fragile Dreams: Farewell Ruins of the Moon
FRACT
FreeFall Tournament
Frontiers [HL2 Mod]
Frustration I
Frustration II
Fuzzy Mc Fluffenstein
Get A Life [HL2 Mod]
Gex 3: Deep Cover Gecko
Gimbal
GMod: Ghost Hunt
GMod: DarkRP
Ghosthunter
Ghost Master
Ghostbusters: The Video Game
Ghostscape
Ghostscape 2 The Cabin
Ghoul's World B9 [Doom 2 Mod]
Give Up Robot
Give Up Robot 2
GIRP
GoldenEye 007
Golden Axe
Gothic III
Götterdämmerung
Grabbed By The Ghoulies
Grand Theft Auto [Counts for all the games in the saga]
Gravity Bone
Gravity Duck
Grey [HL2 Mod]
Grunthouse
Guitar Hero [Counts for all the games in the saga]
Guncraft
Gunman Chronicles
Gunz The Duel
Half Life 2
Halo [Counts for all the games in the franchise]
Hakkyo Oni
Hard Time
Harvest
Hatoful Boyfriend
Haunt
Haunted House Massacre
Haunting Grounds
Heart of Darkness
Heavy Rain
Hellgate London
Hellnight
Heritage
Heta Oni
Hidden In The Shadows
Hidden In The Shadows 2
Hide
Higurashi No Naku Koro Ni
Hissisimulaattori 3D - The Elevator Simulator
Hitman [Counts for all the games on the saga]
Home
Hospice
Hysteria [HL2 Mod]
Home
I Made a game with Zombies in it!!1
Ib
Icycle
IllBleed
Inherent Evil: The Haunted Hotel
Inquietude [HL2 Mod]
Insane
Inside
Irisu Syndrome + English Patch
I Am Alive
Inquisitive Dave
I saw her standing there
I shall Remain
I'm Not Alone
I Wanna Be The Boshy
I Wanna Be The Guy Gaiden
Insectinator-Zombie Terminator Mode
Ikenie no yoru
Jables's Adventure
Jacko In Hell
Jak and Daxter
Jedi Knight: Jedi Academy
Jennifer
Jaws: Unleashed
JFK Reloaded
Journey
Judith
Just Cause 2

Tactical Ops Assault on Terror
Teeworlds
Tekken [Counts for all the games in the saga]
Tempest
Terraria
The 4th Wall
The 7th Guest
The Ball
The Black Heart
The Corridor
The Company Of Myself
The Darkness
The Darkness 2
The Elder Scrolls [Counts for all the games in the saga]
The Electric Man 2
The Endless Zombie Rampage
The Football Playbook
The Ghoul's Forest III (Doom 2 Engine)
The Halloween
The Here and Now of Yesterday
The Hidden
The House
The House of the Dead : Overkill
The Haunted House
The Impossible Game
The Impossible Quiz I
The Impossible Quiz II
The Infinite Ocean
The Insanity
The Insanity 2
The Intruder
The Journeyman Project
The Last Of Us
The Last Stand - Union City
The Legend of Zelda
The Longest Journey
The Lost Crown
The Lost World: Jurassic Park: TrespasserThe Neverhood Chronicles
The Night
The Maze
The Outbreak
The Path
The Real Texas
The Saboteur
The Secret World
The Ship : Murder Party
The Sims [Counts for all the games in the saga]
The Stairwell
The Stanley Parable
The Stone of Anamara
The Suffering [Counts for all the games in the saga]
The Thing
The Unfair Platformer
The Visitor
The Void
The Waiting Game
The Walking Dead
The White Chamber
The World's Hardest Game
The World's Hardest Game 2
The World's Hardest Game 3
They Bleed Pixels
They Hunger [HL Mod]
Thief: Deadly Shadows
Thief 3
Thing-Thing Arena 3
Thrill Kill
Timesplitters
Tiny Hawk
Titan Quest
Tony Hawk's _____ [Counts for all the games in the saga]
Torchlight
To the Moon
Toribash
Touhou [Counts for all the games in the saga]
Toward The Light
Toybox
Trackmania [Counts for the whole "saga"]
Transformice
Trapt
Trials Evolution
Tribes Ascend
Trilby's Notes
Trine 2
Trouble in Terrorist Town
True Crime [Counts for all the games in the saga]
Twisted Metal
Undercroft
Underhell [HL2 Mod]
Unepic
Uni
Uninvited
Under The Garden
Under The Ocean
Upgrade Complete 2
Unreal Flash 3
Untrusty Barrels
Urban chaos: Riot response
Vampire The Masquereade: Bloodlines
Vanquish
Vidiot Game
Virtual Villagers
Vvvvvv
Wages of Darkness
Walking In Circles
Warsow
Waxworks
Way
Where am I?
Where's Waldo?
Which
Whispers - Room 6
White Day (Not gotten around to play it)
Wolfenstein 3D
Worlds.com
Worms [Counts for all the games in the saga]
Wraith
Yu-Gi-Oh: Duelist of the Roses
Yaku: Yuujou Dangi
Yume Nikki
Y8
Yakuza: Dead souls
You Are Here [GTA: SA Mod]
Zelda: Courage, Power and Wisdom
Zeno Clash
Zombies
Zombies Ate my Neighbors
Zombie Exploder
Zombie Panic Source
Zombie Shooter 2
Zwei