It can only be done and maintained with Your help.
Please post Free DLCs in this thread, either bundled+ or independent- and I will add them to the list.
+ is a game including free DLCs
- is a free DLC to download
* number of free DLCs to download
The unrated DLCs will be collected in a separate post.

⚘ 1849: Gold Edition +2DLCs
⚘ Against The Moon - Moonstorm DLC
⚘ Airport CEO - Supersonic DLC
⚘ Alice VR + Roboto Factory DLC
⚘ Ancestors Legacy - Saladins Conquest Digital Soundtrack DLC
⚘ Ancestors Legacy Complete Edition + 3DLCs
⚘ Apocalipsis Wormwood Edition + DLCs
⚘ B.I.O.T.A - Warlock character DLC
⚘ Battle Brothers - Of Flesh and Faith DLC
⚘ Blue Fire - Original Soundtrack
⚘ Brigador Modkit & Map Editor DLC
⚘ Caligula Effect, The. : Overdose - Stigma Bundle DLC
⚘ Carrion + Greatest Time Of Year DLC
⚘ Chernobylite - Short Story: The Arrival DLC
⚘ Children of Morta + 5DLCs
⚘ Children of Morta - Family Fireside Fables DLC
⚘ The Chronicles Of Myrtana: Archolos - Polish Voice-Over Pack DLC
⚘ Commandos + DLC
⚘ Concordia: Digital Edition - Gallia&Corsica DLC
⚘ Control Ultimate Edition + DLCs
⚘ Craft The World - Abandoned Mines DLC
⚘ Crossroads Inn + 5 DLCs
⚘ Cyberpunk 2077 - REDmod DLC
⚘ DARQ: Complete Edition +2DLCs
⚘ Darkest Dungeon - Musketeer DLC
⚘ Dead Cells - Rise of the Giant DLC
⚘ Deus Ex GOTY Edition + Deus Ex Revision DLC
⚘ Diablo + Hellfire DLC
⚘ Die By The Sword + Limb From Limb DLC
⚘ https://www.gog.com/en/game/dishonored_definitive_edition +4DLCs
⚘ Divinity: Original Sin 2 - Sir Lora DLC
⚘ ΔV: Rings of Saturn *2DLCs
⚘ Dying Light *7DLCs
⚘ Dying Light The Following Enhanced Edition + expansion and 4DLCs
⚘ Egypt: Old Kingdom - Master of History DLC
⚘ Endzone A World Apart - Halloween DLC
⚘ Escapists, the + Santa's Sweatshop DLC
⚘ Expeditions: Viking - Blood-Ice DLC
⚘ Firework - Original Soundtrack
⚘ Galactic Civilizations III *2DLCs
⚘ Gamedec *2DLCs
⚘ Goliath - Summertime Gnarkness DLC
⚘ Good Night, Knight - Soundtrack
⚘ Gothic2: The Chronicles Of Myrtana: Archolos DLC
⚘ Gwent: The Witcher Card Game - 4k graphic assets pack DLC
⚘ Hotline Miami 2: Wrong Number - Digital Comics
⚘ https://www.gog.com/en/game/house_flipper +2DLCs
⚘ Hundred Days Winemaking Simulator - Grapelab DLC
⚘ I Am Not A Monster - Multiplayer Version DLC
⚘ Imperator: Rome - The Punic Wars Content Pack DLC
⚘ Imperium Romanum Gold Edition + Emperor Expansion DLC
⚘ Impostor Factory - AU Playbook DLC
⚘ Kingdom Come: Deliverance *5DLCs
⚘ Kingdom Under Fire: The Crusaders - Soundtrack
⚘ Kingdom Under Fire: Heroes - Soundtrack
⚘ Kitaria Fables *2DLCs
⚘ Legend of Heroes, The. : Trails of Cold Steel III *5DLCs
⚘ Megadimension Neptunia VIIR - Free DLC Pack
⚘ Messenger, The. - Picnic Panic DLC
https://www.gog.com/en/game/metro_exodus_sdk
⚘ Metronomicon, The. - Deck The Dubstep DLC
⚘ Middle-earth: Shadow of War *2DLC
⚘ Mordheim: City of the Damned + 2DLC
⚘ Mutant Football League: Dynasty Edition - Purple Oil Pack DLC

⚘ Necromunda: Hired Gun 2*DLC
⚘ Neverwinter Nights: Enhanced Edition *5DLCs
⚘ Neverwinter Nights 2 Complete + DLCs
⚘ Offworld Trading Company - Almanac DLC
⚘ https://www.gog.com/game/our_life_beginnings_always_voiced_name_expansion
⚘ Pathfinder: Kingmaker *2DLCs
⚘ Pathfinder: Wrath of the Righteous *4DLCs
⚘ Patrician IV Gold + Rise of Dynasty DLC
⚘ PC Building Simulator *2DLCs
⚘ Phantom Doctrine - Halloween Scare Tactics DLC
⚘ Pharaoh + Cleopatra DLC
⚘ Pillars of Eternity - Deadfire Pack DLC
⚘ Pillars of Eternity II *5DLCs
⚘ Port Royale 3 Gold + 3DLCs
⚘ https://www.gog.com/en/games?query=Potion%20Permit&priceRange=0,0
⚘ Prison Architect *2DLCs
⚘ Prison Tycoon: Under New Management - Roll Call DLC
⚘ https://www.gog.com/game/prodeus_midi_soundtrack
⚘ Project Hospital - Doctor Mode DLC
⚘ Punk Wars - Hold the Line DLC
⚘ The Quest + 2 DLCs
⚘ Radio Commander Complete Edition + Squad Management DLC
⚘ https://www.gog.com/game/rtype_final_2_april_fools_prototype_rcraft
⚘ Saint Kotar + DLC
⚘ Scythe: Digital Edition - Soundtrack DLC
⚘ Sea Salt - Digital Deluxe Package DLC
⚘ Severed Steel - Art Book DLC
⚘ Shattering, The. - Secret Room DLC
⚘ Sherlock Holmes Chapter One *3DLCs
⚘ Sniper Ghost Warrior 2 + 2DLCs
⚘ Sniper Ghost Warrior Contracts *5DLCs
⚘ SpaceEngine *11DLC
⚘ Space Hulk: Deathwing *3DLCs
⚘ Spellforce 3 Soul Harvest + Oktoberfest DLC
⚘ Sphinx and the Cursed Mummy - Authoring Tools DLC
⚘ Star Control: Origins *2DLCs
⚘ SteamWorld Heist - Hatbox: Three 4 Free DLC
⚘ Steel Division II *15DLCs
⚘ Steel Rats - Stylish Mayhem Skins DLC
⚘ Stellaris *2DLCs
⚘ Surviving Mars - Mysteries Resupply Pack DLC
⚘ Surge, The. *4DLCs
⚘ Talos Principle Gold Edition +5 DLCs
⚘ Terminator: Resistance - Zero Day Exploit Comic
⚘ Thea The Awakening + Return of the Giants DLC
⚘ Thea 2 The Shattering + adventures editor and other modding tools DLCs
⚘ Timelie - Hell Loop DLC
⚘ https://www.gog.com/game/trickstyle_soundtrack
⚘ Trine 4: The Nightmare Prince - The Art of Trine 4 Artbook DLC
⚘ Tropico 3 Gold Edition + Absolute Power DLC
⚘ https://www.gog.com/en/game/twinsens_little_big_adventure_classic_original_edition
⚘ https://www.gog.com/en/game/twinsens_little_big_adventure_2_classic_original_edition
⚘ Two Worlds Epic Edition + 2DLCs
⚘ UnMetal Creator Pack DLC
⚘ Vagrus - The Riven Realms *2DLC
⚘ War for the Overworld - Crucible DLC
https://www.gog.com/en/game/way_of_the_hunter_free_utv_dlc
⚘ Witcher 3, The. : Wild Hunt - Free DLC Program DLC
⚘ Worms United + Reinforcements DLC
⚘ X-morph: Defense Complete Edition + 4DLCs
⚘ Ys VIII: Lacrimosa of DANA *3DLCs
⚘ https://www.gog.com/game/zniw_adventure_soundtrack

Middle-earth: Shadow of War *2DLC
SpaceEngine *11DLC

added, thank you!

Vagrus - The Riven Realms *2DLC

thank you! added, we are good at free stuff! ^

Battle Brothers - Of Flesh and Faith
https://www.gog.com/en/game/battle_brothers_of_flesh_and_faith

Blue Fire - Original Soundtrack
https://www.gog.com/en/game/blue_fire_original_soundtrack

Concordia: Digital Edition - Gallia & Corsica
https://www.gog.com/en/game/concordia_digital_edition_corsica_gallia

Cyberpunk 2077 REDmod
https://www.gog.com/en/game/cyberpunk_2077_redmod

Dead Cells: Rise of the Giant
https://www.gog.com/en/game/dead_cells_rise_of_the_giant

Divinity: Original Sin 2 - Sir Lora
https://www.gog.com/en/game/divinity_original_sin_2_sir_lora

Egypt: Old Kingdom - Master of History
https://www.gog.com/en/game/egypt_old_kingdom_master_of_history

Hotline Miami 2: Wrong Number - Digital Comics
https://www.gog.com/en/game/hotline_miami_2_wrong_number_digital_comics

Mordheim: City of the Damned
The version on GOG does not include online features. As a token of apology, we added the DLC "HIRED SWORDS DLC BUNDLE 2 - Doomweaver + Wolf-Priest of Ulric" into the base game.

Necromunda: Hired Gun
[url=https://www.gog.com/en/games?query=necromunda&priceRange=0,0&order=desc:score]https://www.gog.com/en/games?query=necromunda&priceRange=0,0&order=desc:score[/url]

Pathfinder: Wrath of the Righteous
[url=https://www.gog.com/en/games?query=pathfinder%20wrath&priceRange=0,0&order=desc:score]https://www.gog.com/en/games?query=pathfinder%20wrath&priceRange=0,0&order=desc:score[/url]

Prison Tycoon: Under New Management - Roll Call
https://www.gog.com/en/game/prison_tycoon_under_new_management_roll_call

Punk Wars: Hold the Line
https://www.gog.com/en/game/punk_wars_hold_the_line

UnMetal Creator Pack
https://www.gog.com/en/game/unmetal_creator_pack

ΔV: Rings of Saturn
[url=https://www.gog.com/en/games?query=Rings%20of%20Saturn&priceRange=0,0&order=desc:score]https://www.gog.com/en/games?query=Rings%20of%20Saturn&priceRange=0,0&order=desc:score[/url]

👀 thank you! adding...

Hey, thanks for this! There are some games I had where I wasn't aware there was a free (but separately purchased) DLC.

Thanks for the alphanumeric listing with links ... cannot believe you did that. :)

And though I realize it would be more work, it would have been better to list the name of each single DLC, rather than just give a number and link, especially as that would then make your listings an excellent way to quickly check on DLCs for a specific game, which is the current annoyance with the way GOG does it, where they are spread all over the pages.

Your link method is good though, if you are only checking one game.

I would also recommend you keep the bundled separate from the singles, under their own heading.

BUNDLED

⚘ Dying Light The Following Enhanced Edition + expansion and 4DLCs

In fact, you could also do other sub-headings.

NEWLY ADDED

MAIN LISTING

REMOVED

Anyway, good job, but a lot of work, especially going forward where you then need to keep up with comparisons. A lot easier with Free games and demos, where it is easy to own all of them, thus making new ones stand out.

I'd give you a hand, but I spend too much time at GOG as it is. ;)

The Escapists

Includes the Free DLC "Santa's Sweatshop"



The Talos Principle: Gold Edition

has all five DLCs included that are sold separately elsewhere.

@GOG

Discovered a listing error.

Gamedec - Definitive Edition - Free Characters Bundle

This should be marked as a DLC on the Free Games list, but isn't.

https://www.gog.com/en/games?priceRange=0,0

Thank You! Adding. Much easier with your help : )

adding Hard West 2 Faithfull Outlaw Reward as a Free DLC for Hard West 2 (if HW1 in library)

is it free of you have to own (buy) the first game to get it?