Amazon Dreamcast Pack
Stronghold Collection
Anime Studio Debut 9

My Holiday Gaming expenses:
Steam:
Half life 2
Resident Evil 5
Dawn of War Franchise pack
Fear: Ultimate Edition
Dead Island GOTY
Stronghold Collection
Red Orchestra 2
THQ humble Bundle
Thief Bundle
Company of Heroes
Borderlands

GG:
Jagged Alliance 2 Wildfire (dirt cheap)
Two Worlds 2 GOTY
Renegade Ops
Burnout Paradise: The Ultimate Edition
Gothic Complete pack & Arcania Gold Edition
Lara Croft and the Guardian of Light
Sacred 2 Fallen Angel
Batman: Arkham Asylum GOTY

GOG:
Freespace 2
Medal of Honor: War Chest
Prince of Persia
Divinity 2: Developer's Cut
Machinarium: Collector's Edition

Less GOG buying this holiday, as I have the games I wanted in my shelf. That's it for me, as I'm reserving my remaining 20 bucks for the Dragonborn DLC.

Add all the Heroes of MM to the List

Updated list till now:

Steam:
Patrician IV Gold
Port Royale 3
Drakengard: The River of Time + DLC (Traded for it, take that regional locks :p)
Sims Medieval
Garry's Mod
Legend of Grimrock (Gift)
Chivalry
Lume
Age of Empires 3 Complete Edition
Skyrim DLC (Dawnguard - Heartfire)
The Walking Dead
Devil May Cry 3 Special Edition + Devil May Cry 4 Bundle
Tropico 4 + DLC
Port Royale 3 DLC's
Kohan Warchest
Airline Tycoon 2: Gold
M.U.D. TV
Endless Space Emperor Edition

Gamersgate:
Liftoff Bundle
Defender's Quest
Age of Wonders 1
Age of Wonders 2
Fallen Enchantress

Bumping this with my (I think) final list.

Amazon:
Guild Wars 2
800 Xbox Points that became The Walking Dead
Hotline Miami
The Secret World
Total: $55.50

Gamersgate:
Dungeons and Dragons Master Collection
Deus Ex: GOTY
Painkiller Overdose
Dead Block
R.I.P. Trilogy (Free game from B4G1)
Total: $19 with some blue coins left over

GOG:
Giana Sisters
La Mulana
Snapshot
Capsized
XIII
Shadow Warrior (Trade)
Total: $15.75

Other:
Torchlight II from Runic
Total: $15

So $105.25 total for me.

This holiday season was the first time I'd really had money for games in almost a year. I went a bit crazy...

iTunes:

Jet Set Radio

GOG:

Sam and Max Save the World
Daedalic Adventures Bundle
Wallace and Gromit's Grand Adventures
Sam and Max Beyond Time and Space
Descent 3
Hostile Waters

Steam:

Crysis
Crysis 2 Maximum Edition
Mount and Blade Collection (gifted it away)
Zeno Clash
Penny Arcade Combo Pack
On the Rain Slick Precipice of Darkness Episode 3
English Country Tune
Death and the Fly
Tales from Space: Mutant Blobs Attack
The Sherlock Holmes Collection
Giana Sisters: Twisted Dreams
Ace of Spades x4 (gifted the extras)
Mark of the Ninja
Lord of the Rings: War in the North x2
Torchlight II x2 (bought on Gamersgate)
Half Minute Hero: Super Mega Blah Blah
Rocketbirds
Hotline Miami (bought on Gamersgate)
Batman: Arkham City GOTY (bought on GreenManGaming)
Of Orcs and Men
Alan Wake
They Bleed Pixels
The Walking Dead
Chivalry: Medieval Warfare
Fly'N
I Am Alive
Sleeping Dogs

Humble Bundle 7 (not BTA)

Indie Gamestand (not BTA):
Blueberry Garden
Reprisal

GOG:
Tomb Raider 1+2+3
Legacy of Kain: Blood Omen 2
Legacy of Kain: Soul Reaver 2
Legacy of Kain: Defiance
Urban Chaos
Blake Stone: Aliens of Gold
Duke Nukem: Manhattan Project
Gorky 17
Gothic
Spacechem
Anomaly: Warzone Earth
Multiwinia
DEFCON
Defender's Quest
Trine

Didn't buy any games from anywhere else this time.

Edit 2013-01-06 2420 am

Amazon:

Darkness II
El Matador
Hitman Absolution Standard Ed
Rise of Flight: Iron Cross Ed
Secret World
-------------------------------------------------------------

GamersGate:

Iron Front: Liberation 1944
Order of War
Painkiller: Redemption
Ravaged (93% off!)
RIFT Plains of Telaria: Storm Legion Infinity Ed
Supreme Commander 2
Sword of the Stars II Complete
Warhammer 20k Space Marine
--------------------------------------------------------------

GoodOldGames:

Anachronox
B-17 Flying Fortress
Back To the Future
Beneath the Steel Sky -FREE
Blitzkrieg Anthology
Chronicles of Riddick
Commandos 2-3
Commandos Ammo Pack
Deus Ex : Invisible War
Deus Ex GOTY
Dragonsphere -FREE
D&D: Dragonshard
Evolva
Farenheit: Indigy Prophecy Uncensored
Freedom Force: 3rd Reich
Independence War 1
Independence War 2
Lure of the Temptress -FREE
Medal of Honor: Warchest
Outcast
Panzer General II
Panzer General 3D Assault
S2 Silent Storm
Sniper Elite
Street Fighter 2 Alpha
Thief Gold
Thief: Deadly Shadows
Thief: Metal Age
Teen Agent -FREE
Treasure Adventure Game -FREE
Trine
Tyrian 2000 -FREE
Ultima IV: Quest of the Avatar -FREE
Ultima: Martian Dreams -FREE
Warsow -FREE
Wing Commander IV: Price of Freedom
-------------------------------------------------------------

GreenMan Gaming:

Blades of Time
Dead Block
JetSet Radio
Nexuiz
Sine Mora
Spec Ops: Line
Three Dead Zed
-------------------------------------------------------------

GameFly:

Battlefield: Bad Company 2 Ultimate
-------------------------------------------------------------

Groupee Greenlit
-------------------------------------------------------------

Humble Indie Bundle 7
-------------------------------------------------------------

Steam:

A-10C Warthog Combat Sim
ARMA II: Army of the Czech Republic DLC
Blacklight Tango Down
Call of Duty: Black Ops I + all DLC 2x
Counter-Strike GO
Darksiders Franchise Pack (incl Season Pass)
Dawn of War Franchise Pack
Dead Rising 2 Off the Record + all DLC
Deponia
Devil May Cry 3 and 4 Bundle
Hell Yeah!
Hitman Absolution DLCs
Max Payne 3 + Season Pass
Natural Selection II Deluxe
Painkiller: Hell & Damnation + DLC Upgrade
QUBE
Rocketbirds
RUSE + all DLC
Serious Same 3 BFE + all DLC
Shogun 2 Otomo Clan Pack DLC
Shogun 2 Saints and Heroes DLC
Sleeping Dogs + all but 2 DLC
Sniper Elite v2 + all DLC
Star Wars KOTOR I
Star Wars KOTOR II
Tiny & Big: Grandpa's Leftovers
Torchlight II
Walking Dead
Warband: Napoleonic Wars DLC
Wargame: European Escalation

I think I'm done. Yeah.

Fiiiinal taaaally!

GOG: Bullfrog Pack (Didn't already own anything), The Real Texas, Indie Adventure Pack
GamersGate: Zafehouse: Diaries (via IndieFort, but I'm giving away the rest), Grey Matter, Titan Quest: Gold.
GetGames: Deus Ex: Human Revolution, Alpha Protocol.
Strategy First: Pathologic.
IndieGala: Edna & Harvey: The Breakout, Airline Tycoon 2000, The Whispered World, Cargo! The Quest For Gravity.
HumbleBundle: THQ Bundle, Amnesia Fortnight, Bundle 7
Steam: Endless Space (Emperor Edition), KOTOR2, Evochron Mercenary, Home, Guns of Icarus Online.

Well, holidays are mostly over so: a ton.

Seriously, less than other years (since I've already scored most of the old or niche titles for cheap already) but still quite a bit.

Here:

Shadow Warrior
Dungeon Keeper 2
FTL
The Witcher 2
Wing Commander 1-2-3-4
Blood
Master or Orion 1+2
Anachronox
Commandos Ammo Pack
XIII
and Arx Fatalis was gifted to me.

On Steam:
Hotline Miami
Spec Ops: The Line
Hard Reset
Sleeping Dogs

and I've also bought the Humble Indie Bundle 7.

*Update list*

GOG:
Blake Stone Aliens of Gold
Blake Stone Planet Strike
Sid Meier's Alpha Centauri
FTL
Primordia
Gemini Rue
Dangerous Dave Pack(lot better then I thought it would be)
Duke Nukem 1+2
Populous 1
Populous 2

Steam:
Jet Set Radio
Torchlight 2
Hell Yeah!: wrath of the dead rabbit
The Bard's Tale
Ys Origin

I think this is the full list now, starting from Dec 12 when GOG launched its "Holiday Gift Duke Nukem 3D":

Humble Indie Bundle 7:

Dungeon Defenders + DLC
Legend of Grimrock
Snapshot
The Binding of Isaac + Wrath of the Lamb
Closure
(Indie Game: The Movie)
Shank 2
Cave Story+
Offspring Fling
The Basement Collection

GetGamesGo:

Spec Ops: The Line (Steam)

Steam:

Mirror's Edge
Saints Row 2
Saints Row The Third: The Full Package
Half-Life 2: Episode One
Half-Life 2: Episode Two

(I was pretty close to buying three Tomb Raider games (Anniversary, Legend and Underworld) from Steam, but decided to give it a miss until I either come around to actually wanting to play them right there and now, or they come to GOG, whichever happens first)

GOG:

Duke Nukem 3D Atomic Edition (freebie)
ArmA 2
Inquisitor
The Real Texas
Gangsters: Organized Crime
Legacy of Kain: Blood Omen 2
Startopia
Urban Chaos
Spacechem
Anomaly Warzone Earth
Defender's Quest
Deponia
A New Beginning - Final Cut
Dark Eye: The Chains of Satinav
Edna & Harvey: The Breakout + Harvey's New Eyes
Stacking
Capsized
La Mulana
Snapshot
Giana Sisters: Twisted Dreams
Symphony
The Ball
Incredipede
Puddle
Unmechanical
Medal of Honor: Allied Assault War Chest
Moonbase Commander
Star Control 1+2
Fragile Allegiance
Divinity 2: Developer's Cut
Dungeon Keeper
Populous
Magic Carpet
Populous 2: Trials of the Olympian Gods
Syndicate
Populous: The Beginning
Sid Meier's Alpha Centauri
Apache Longbow
Battle Realms + Winter of the Wolf
Capitalism 2
Capitalism Plus
Ceville
Costume Quest
Gangland
Guilty Gear Isuka
Hind
Hostile Waters: Antaeus Rising
Imperialism
King of Dragon Pass
Lucius
Oddworld: Abe's Exoddus
Oddworld: Abe's Oddysee
Oddworld: Stranger's Wrath HD
Pid
Powerslide
Prince of Persia
Raptor: Call of the Shadows 2010 Edition
Rise of the Triad: Dark War
Restaurant Empire
Runaway 2: The Dream of the Turtle
Sanitarium
Screamer 2
Serious Sam: The First Encounter
Serious Sam: The Second Encounter
Shadow Warrior Complete
Spycraft: The Great Game
Street Fighter Alpha 2
Terminal Velocity
Time Commando
Warlords Battlecry
Warlords Battlecry 2
World Rally Fever: Born on the Road
Worms United
Worms 2