This is zillatain's list adjusted for current state of things, as the author's currently busy.

Games That Are No More (Or Almost)
00 - Deadly Premonition: Director's Cut (no more keys)
01 - Shadowrun Returns
02 - Warlords Battlecry 3
03 - Carmageddon 2: Carpocalypse Now
04 - King's Quest 4+5+6
05 - Wasteland 1 - The Original Classic
06 - Sang-Froid: Tales of Werewolves
07 - Duke Nukem 3D: Atomic Edition
08 - Vampire The Masquerade - Redemption
09 - Little Big Adventure (Relentless: Twinsen's Adventure)
10 - Alan Wake
11 - Race the Sun
12 - Blade of Darkness
13 - Children of the Nile Complete
14 - Full Spectrum Warrior
15 - Time Commando
16 - Evil Genius
17 - Aarklash: Legacy
18 - 11th Hour, The
19 - Interstate '76 Arsenal, The
20 - Legend of Grimrock
21 - Teslagrad
22 - Blitzkrieg Anthology
23 - Broken Age Season Pass
24 - Rise of the Triad (2013)
25 - Still Life
26 - Pirates! Gold Plus
27 - Valdis Story: Abyssal City
28 - Arcanum: Of Steamworks and Magick Obscura
29 - Lone Survivor: The Director's Cut
30 - Gateways
31 - Uru: Complete Chronicles
32 - Ring Runner: Flight of the Sages
33 - Divinity: Dragon Commander Imperial Edition
34 - Deus Ex 2: Invisible War
35 - SWAT 3: Tactical Game of the Year Edition
36 - Gomo
37 - Signal Ops
38 - Riven: The Sequel to Myst
39 - SiN Gold
40 - Hammerwatch
41 - Trine 2: Complete Story
42 - Theme Park
43 - Etherlords 2
44 - Little Big Adventure 2 (Twinsen's Odyssey)
45 - Raiden Legacy
46 - Bard's Tale, The
47 - Hitman: Codename 47
48 - Zork Anthology, The
49 - Heretic Kingdoms: The Inquisition
50 - Papers, Please
51 - Cognition: An Erica Reed Thriller
52 - Star Control 1 + 2
53 - Luftrausers
54 - Syberia 2

Games Yet to Come in This Final Round (45)
Alan Wake's American Nightmare
American McGee's Grimm
Battle Worlds: Kronos
Betrayal at Krondor Pack
Book Of Unwritten Tales: The Critter Chronicles, The
Cannon Fodder
Capitalism 2
Democracy 3
Deponia 3: Goodbye Deponia
Desperados: Wanted Dead or Alive
Driftmoon
Edna & Harvey: Harvey's New Eyes
Entomorph: Plague of the Darkfall
FlatOut 2
FTL: Advanced Edition
Full Spectrum Warrior: Ten Hammers
Gobliiins pack
Guild Gold Edition, The
Hitman 2: Silent Assassin
Humans Must Answer
Inquisitor
Last Express, The
Leisure Suit Larry: Love for Sail!
Long Live the Queen
Painkiller Black Edition
Pid
PixelJunk Shooter
Police Quest 1+2+3+4
Quest for Glory 1-5
S2: Silent Storm Gold Edition
Sam & Max Beyond Time and Space
Sam & Max Save the World
Sam & Max: The Devil’s Playhouse
Seven Kingdoms: Ancient Adversaries
Shadow Man
Shattered Haven
Shelter
Smugglers V
Space Quest 4+5+6
Stronghold Crusader HD
Symphony
The Inner World
Tiny and Big: Grandpa's Leftovers
Tomb Raider: The Angel of Darkness
Torchlight