My last attempt at this is apparently too long to work on the new GOG, so I'm recreating it and splitting up the list into multiple posts, I just hope it's in small enough pieces to handle additions later.

GOG now does show on the game page if the game contain more languages than English, but not for all games that do so. Some games has fan-made translations which GOG of course does not account for, and some games require manual editing or renaming of the games' data files which - again - GOG doesn't inform of (instead simply saying the game's only available in English).

With these points in mind, I think there's still a meaning to this list.

I'll update this first post continuously as new information is revealed (that is, by you). If the version here on GOG only supports English, but you know of a fan-made translation, please link to it. Anyone who adds relevant info that is not already added will get a positive rating, it's not much but it's a little thanks for helping out.

----- Table of contents ------
Post 1: Intro, ToC, GOGMixes, A-B
Post 3: B-H
Post 5: I-M
Post 7: N-S
Post 9: T-Z, Requests, Unilingual games, Contributors
GOGmix: All games that already contain various languages, as far as I know

----- Unilingual GOGmixes ------
These all list games that either include a specific language, or has a translation patch for that language. They are created and kept up to date by the respective attributed user, not by me.
* Italian: AaronAmoth's Italian GOGmix has been hit by a bug, removing all its content, twice. Until GOG fixes said bug, he likely won't be recreating it again.
* Portugese: Jogos em Português Brasileiro (Games in PT-BR) (Kowagaru)
* Spanish: hensip's Spanish GOGmix has, similarly to AaronAmoth's, been emptied.
* German: Spiele auf Deutsch (Lafazar) - Likely won't update until said GOGmix issues have been fixed

------ 0-9 ------

------ A ------

Advent Rising
* Translation patch for Hungarian (thanks gyokzoli)
* Translation patch for German (thanks Bianco81)
* Translation patch for Brazilian Portugese (thanks Kowagaru)

Alone in the Dark (Alone in the Dark 1+2+3)
* English, French, German, Italian, Spanish
* Click on the Setup icon in the start menu.
(thanks sebarnolds)

Alone in the Dark 2 and 3 (Alone in the Dark 1+2+3)
* Translation patches for French (thanks sebarnolds)

Sid Meier's Alpha Centauri
* Translation patch for Italian (thanks DukeNukemForever and ac2info)

American Conquest
* Translation Patch for German (does NOT apply to "Fight Back") (thanks Rhineland)

Amerzone
* English, French, German, Italian, Spanish
* You choose language when installing the game

Another World
* English, French, German, Italian, Spanish
* Run the Config program installed with the game
* Translation patch for Brazilian Portugese (thanks Kowagaru)

Arcanum: Of Steamworks and Magick Obscura
* Translation patch (text only - 25MB) for German (thanks Spellbreaker1979)
* Translation patch (text, speech, video - 365MB) for German (thanks Spellbreaker1979)

Arx Fatalis
* Translation patch for Polish (thanks kjx)

Atlantis
* English, French, German, Italian, Spanish
* You choose language when installing the game
(thanks Lafazar and DukeNukemForever)

------ B ------

Baldur's Gate: The Original Saga
* Translation patch for French (including Tales of the Sword Coast, default installation) (thanks Spellbreaker1979)
* Translation patch for German (including Tales of the Sword Coast, default installation) (thanks Spellbreaker1979)
* Translation patch for German (WITHOUT Tales of the Sword Coast) (thanks Spellbreaker1979)

Baldur's Gate 2 Complete
* Translation patch for German (including Throne of Bhaal, default installation) (thanks Spellbreaker1979)
* Translation patch for German (WITHOUT Throne of Bhaal) (thanks Spellbreaker1979)
* Translation patch for French (BOTH with and without Throne of Bhaal, with voice) (thanks Twan)
* Translation patch for Brazilian Portugese (WITHOUT Throne of Bhaal) (thanks Kowagaru)

Beneath a Steel Sky
* US English, British English, French, German, Italian, Brazilian Portugese, Spanish, Swedish
* Edit the file "beneath.ini" in the game's installation directory:
Somewhere below the row/title [beneath], add a line "language=xx", without the quotes, where xx is one of the following two-letter identifiers:
us - US English
gb - British English
fr - French
de - German
it - Italian
br - Brazilian Portuguese
es - Spanish
se - Swedish
* Changes only text, not speech, the intro doesn't seem to have any text at all
(thanks eriktorbjorn)

Beyond Good and Evil
* English, Dutch, French, German, Italian, Spanish
* You chose the language each time you start the game (English is default, at least in my case, with an English system).
* Choice changes both text and speech.

Beyond Divinity
* Translation patch for German (also voice!) (thanks Bianco81)

Bloodrayne
* Translation patch for Hungarian (thanks gyokzoli)
* Translation patch for German (thanks Bianco81) (password: schote.dl.am)
* Translation patch for Brazilian Portugese (thanks Kowagaru)

Bloodrayne 2
* Translation patch for German (thanks Bianco81)
* Translation patch for Brazilian Portugese (thanks Kowagaru)
* Translation patch for Polish (thanks Sledziks)

Broken Sword: Directors Cut
* British English, American English, French, German, Italian, Spanish
* Change by clicking the flag in the options
* All are present as text choices, and only American English is NOT available for speech. I don't know what the difference is between American and British English, probably something silly like spelling colour as "color" instead - and only once or twice at that.
* Strangely enough, the intro movie is spoken in the text language.

Broken Sword 2: The Smoking Mirror (Remastered)
* English, French, German, Italian, Spanish
* Change by clicking the flag in the options
* All are present as both text and audio.
* Strangely enough, the intro movie is spoken in the text language.

Post breaker!

Broken Sword 2: The Smoking Mirror (Original)
* Translation patch for Hungarian (thanks gyokzoli)

Broken Sword 3: The Sleeping Dragon
* Translation patch for Hungarian (thanks gyokzoli)

Broken Sword: The Angel of Death
* English, French, German, Italian, Spanish.

------ C ------

Caesar 3
* Translation patch for Hungarian (thanks gyokzoli)
* [url=]Translation Patch[/url] for Brazilian Portugese (thanks Kowagaru)

Call to Power 2
* The Apolyton Source Code Project contains translations to French, German, Italian, and Spanish, as well as a load of other fixes.
* This other page also contains Polish, and sound files for some languages.
* After installation of that patch, the folder <game>\ctp2_data will contain a folder for each language.
* Take a backup of the "english" folder, then copy everything from the language you want into "english". (Though guides say to edit a file so that it points to the correct language folder, this seems to crash the game.)
(thanks DukeNukemForever and Elwin)

Commandos: Beyond the Call of Duty (Ammo Pack)
* Translation patch for Hungarian (thanks gyokzoli)

Commandos 2 (Commandos 2+3)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Commandos 3 (Commandos 2+3)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Constructor
* English, American, French, German, Portugese, Spanish
* The option can be found in in the game settings.

------ D ------

Darkstar One
* English, French
* Setting is ingame
(thanks carali)

Darwinia
* English, German

Desperados
* Translation Patch for Brazilian Portugese (thanks Kowagaru)
* Translation patch for German (thanks Rhineland)

Deus Ex
* Translation Patch for German (thanks phantomias2023)

Divine Divinity
* Translation patch for French (with voice!) (thanks Tehnloss)
(books are not translated, doesn't distinguish between genders, explanation and solution at the Divine Divinity board)

Duke Nukem 3D
* Translation patch for Hungarian (thanks gyokzoli)

Dungeon Keeper
* Translation patch for French (also voice!) (thanks Ginnungagapp)
* Translation patch for German (also voice!) (thanks sentek)

------ E ------

Empire Earth

Empire Earth 2
* Translation patch for German (thanks Bianco81) (password: schote.dl.am)

Enclave
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Evil Genius
* English, French, German, Spanish
* Setting is in the game options (Options->Game)
* Default is the system language (or English, I guess, if the systems doesn't use any of the present languages)
* Changes both text and speech.

Evolva
* Translation patch for Hungarian (thanks gyokzoli)

------ F ------

Fahrenheit (Indigo Prophecy)
* English, French, German, Spanish
* Subtitles, menu and voice can be chosen independently
* Languages are chosen directly after the first start (or later in the options)
(thanks DukeNukemForever)

Fallout 1
* Translation patch for Czech (thanks Fenixp)
* Translation patch for French (thanks Narakir)
* [url=http://www.c3.hu/~frc/fallout2/web/htm/letoltesek_fallout1.htm]Translation patch[/url] for Hungarian (thanks gyokzoli)
* Translation patch for Italian (thanks greentravler)

Fallout 2
* Translation patch for Czech (thanks Fenixp)
* Translation patch for French (thanks Narakir)
* [url=http://www.c3.hu/~frc/fallout2/web/htm/letoltesek_fallout2.htm]Translation patch[/url] for Hungarian (thanks gyokzoli)
* Translation patch for Italian (thanks greentravler)

Fallout Tactics
* Translation patch for French (thanks Narakir)
* [url=http://www.c3.hu/~frc/fallout2/web/htm/letoltesek_fallout_t.htm]Translation patch[/url] for Hungarian (thanks gyokzoli)
* Translation patch for Italian (thanks greentravler)

Far Cry
* Translation patch for German (also voice!) (thanks Bianco81)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Flatout
* Translation patch for German (thanks Bianco81)

Freespace
* Translation patch for Italian (thanks Itlodeo)

Freespace 2
* Translation patch for Italian (thanks Itlodeo)

------ G ------

Gabriel Knight: Sins of the Fathers
* Translation patch for Italian - use the floppy patch, disable voices if the text is too fast (thanks AaronAmoth)

Giants: Citizen Kabuto
* English, French, German, Italian, Spanish
* Inside the <game>\BIN directory, rename the GTextEnglish.bin to (for example) GTextEnglish.backup, and rename the one of the following files to GTextEnglish.bin (depending on which language you want):
GTextFrench.bin
GTextGerman.bin
GTextItalian.bin
GTextSpanish.bin
* According to the filenames, I believe this only changes text, not speech.
(thanks vibi & DukeNukemForever)
* Translation patch for Hungarian (thanks gyokzoli)

------ H ------

Heroes of Might and Magic III
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Heroes of Might and Magic IV
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Post breaker!

------ I ------

Icewind Dale Complete
* Translation patch for French (WITH Trials of the Luremaster, default install) (thanks Spellbreaker1979)
* Translation patch for German (WITH Trials of the Luremaster, default install) (thanks Spellbreaker1979)
* Translation patch for Italian (WITH Trials of the Luremaster, default install) (thanks Spellbreaker1979)
* Translation patch for Spanish (WITH Trials of the Luremaster, default install) (thanks Spellbreaker1979)
* Translation patch for French (WITHOUT Trials of the Luremaster) (thanks Spellbreaker1979)
* Translation patch for German (WITHOUT Trials of the Luremaster) (thanks Spellbreaker1979)
* Translation patch for Italian (WITHOUT Trials of the Luremaster) (thanks Spellbreaker1979)
* Translation patch for Spanish (WITHOUT Trials of the Luremaster) (thanks Spellbreaker1979)

Icewind Dale 2 Complete
* Translation patch for French (thanks Spellbreaker1979)
* Translation patch for German (thanks Spellbreaker1979)
* Translation patch for Spanish (thanks Spellbreaker1979)

Imperial Glory
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

The Incredible Machine 3 (Incredible Machine Mega Pack)
* English, French, German, Italian, Spanish
* Open the game, enter any of the game modes, go to the menu "Configure" then "Preferences", there you can switch between the languages by clicking the up/down arrows and applying the new settings.

In Cold Blood
* Translation patch for French (also cinematics) (thanks sebarnolds)

Independence War (Independence War Deluxe)
* English, French, German
* Make a shortcut to IWar.exe (easiest way: find the game's folder, right-click the IWar icon, choose "Send to", then "Desktop (create shortcut)"), then edit the shortcut (right-click->Properties) and add "-b -16 -<lang>" right att he end of the "Target" line (after the final "), where <lang> may be either "french" or "german".
* For example, if I wanted to run my game in German, I would change the target line to say:
"G:\Games\GOG.com\Independence War Deluxe\IWar.exe" -b -16 -german
* As an added bonus (or detriment, depending on how you see it), this also bypasses the intro video, instead only showing the logo videos. You can watch the intro video manually by running Intro.exe, though it's not translated.
(thanks DukeNukemForever and Ravenger)

Ishar Compilation
* English, French, German (Also Italian for Ishar 1, and Spanish for Ishar 3)
* Choice is ingame
(thanks Ois)

------ J ------

Jagged Alliance
* Translation patch for Polish (thanks Frozen)

Jagged Alliance 2

Judge Dredd: Dredd vs Death
* Translation patch for German (also voice!) (thanks Bianco81)

------ K ------

King's Bounty
* Translation Patch for Brazilian Portugese (thanks Kowagaru)
* Translation Patch for German (thanks Smoker1 Bianco81)

------ L ------

Lands of Lore (Lands of Lore 1+2)
* English, French, German
* Language can be changed in the in-game settings)
(thanks moonshineshadow)

Little Big Adventure
* Text and audio: English, French, German
* Text only: Italian, Spanish
* From main directory, run "Language" as administrator. Then you can choose your favourite one.
(thanks AaronAmoth)

Lionheart: Legacy of the Crusader
* Translation patch for German (thanks Spellbreaker1979)
* Translation patch for French (thanks Spellbreaker1979)
* Translation patch for Spanish (thanks Spellbreaker1979)

The Longest Journey
* Translation patch for German (thanks Spellbreaker1979)
* Translation patch for Hungarian (thanks gyokzoli)

------ M ------

Master of Orion 2
* Translation patch for Hungarian (thanks gyokzoli)

MDK
* Translation patch for Hungarian (thanks gyokzoli)

MDK 2
* English, French, German, Italian, Spanish
* Take a backup of the file <game>\override\english\mdk2.str and replace the original with the same file from the other language's directory.
(thanks DukeNukemForever)
* Translation patch for Hungarian (thanks gyokzoli)

Messiah
* English, French, German, Italian, Spanish
* Rename the file Messiah.eng to Messiah.eng.backup, and rename ONE of the following files to Messiah.eng, depending on the language you want to use.
* According to Narakir, the French translation is pretty bad.
Messiah.fra (French)
Messiah.ger (German)
Messiah.ita (Italian)
Messiah.spa (Spanish)
(thanks Ba7oU & DukeNukemForever)

Might and Magic 6 (Might and Magic 6-pack)
* Translation patch for Polish (thanks kjx)

Might and Magic 8
* Translation patch for French (thanks Merchito)

Moto Racer
* English, French, German, Italian, Spanish, Swedish
* Language is chosen each time the launcher is run. Default will be English the first time, then whatever was chosen last.
(thanks gamebin)

Moto Racer 2
* English, French, German, Italian, Spanish
* Language is chosen each time the launcher is run. Default will be English the first time, then whatever was chosen last.

Myst: Masterpiece Edition
* Translation patch for German (thanks Spellbreaker1979)

Post breaker!

------ N ------

Neighbours From Hell (Neighbours From Hell Compilation)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Neighbours From Hell II (Neighbours From Hell Compilation)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Neverwinter Nights
* Translation patch for French (thanks Vahron & Nnexxus)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)
* Translation Patch for German (thanks DukeNukemForever)

------ O ------

Original War
* Czech, English, French, German, Italian, Japanese, Polish, Russian, Spanish
* Language can be changed through the "OW Launcher"
* Only changes text/subtitiles, not audio
(thanks klaymen, Itlodeo, & Frozen)

Outcast
* Text+Speech: English, French, German
* Text only: Brasilian, Dutch, Italian, Spanish
* Go to <game>\data\voices\<the-language-you-want>, select all the files and copy them to the root installation folder (<game>), it will replace the text.pak and the fix.pak files(that's all for Brasilian, Dutch, Italian, and Spanish), for French and German, delete the voices+.pak files. and rename the new ones to add + to the file name (for voicesge.pak you have to add n+), so you will have the same filename as before.
* If you want one language for voices and another for subtitles, first copy everything as above for the "voice" language, then copy just text.pak and fix.pak for the "text" language.
(thanks Nodens and cebewee)

------ P ------

Painkiller
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Planescape: Torment
* Translation patch for German (thanks CDPfan)
* Translation patch for Italian (thanks Elle85)
* Translation patch for French (thanks ERISS)

Postal 2: Share the Pain (Postal 2 Complete)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Praetorians
* Translation patch for Polish (thanks kjx)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Pro Pinball: Big Race USA
* English, French, German, Spanish (as far as I know, I did try some others but they defaulted back to English or crashed the game)
* Some of the text is still in English, but most should be in the chosen language, I only checked the config menu.
* Open the file winst.cfg with Notepad and change both lines to your language of choice... it's not completely logical however, as some languages need to be typed in that language, and others in English, look below for the correct strings (capitalisation matters).
English
French
Deutsch
Espanol

Pro Pinball: Fantastic Journey
* English, French, German, Spanish (as far as I know, I did try some others but they defaulted back to English or crashed the game)
* Open the file winst.cfg with Notepad and change both lines to your language of choice... it's not completely logical however, as some languages need to be typed in that language, and others in English, look below for the correct strings (capitalisation matters).
* Yes, these instructions are the same as for the previous game.
English
French
Deutsch
Espanol

Psychonauts
* English, French, German, "Nonsense" (1337-like)
* Italian and Spanish are present as folders, but contain no language files, so they make no difference, look below for an Italian Translation patch
* Go into the <game>\WorkResource\Localization folder and make a copy of "English" then copy the contents of the language folder you want to use, paste it into "English" (the original, not the copy) replacing files when asked to.
* Only changes text
* Translation patch for Italian (thanks Elle85)
* Translation patch for Hungarian (thanks gyokzoli)

------ Q ------

------ R ------

Republic: The Revolution
* English, French, German, Spanish
* You choose language when installing the game
(thanks Narakir)

Riven: The Sequel to Myst
* Translation patch for German (thanks Spellbreaker1979)

[url=]Roller Coaster Tycoon 2[/url]
* Translation patch for German (thanks Rhineland)

------ S ------

Sacred: Gold
* Translation patch for Hungarian (thanks gyokzoli)

Sanitarium
* Translation patch for German (thanks Spellbreaker1979)
* Translation patch for Italian (thanks AaronAmoth)

Second Sight
* English (British?), American, French, German, Italian, Spanish
* Option is in game.
* Only changes text.
(thanks Teilnehmer)
* Translation patch for Hungarian (thanks gyokzoli)

Serious Sam: The First Encounter
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Serious Sam: The Second Encounter
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Sniper Elite
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Space Rangers 2
* Translation Patch for Czech, German, Hungarian, Polish, Russian (thanks Smoker1)

Stronghold
* Translation patch for Hungarian (thanks gyokzoli)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Stronghold: Crusader
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Syberia
* English, French, German, Italian, Spanish
* You choose language when installing the game
* Both text and audio
(thanks darkbatman)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Syberia 2
* English, French, German, Italian, Spanish
* You choose language when installing the game
* Translation patch for Hungarian (thanks gyokzoli)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Post breaker!

------ T ------

Temple of Elemental Evil
* Translation Patch for German (thanks Spellbreaker1979)

Theme hospital
* English, French, German, Spanish, Swedish, others?
* Edit hospital.cfg (in, for example, notepad) and change LANGUAGE=ENG to the language of choice:
FR
GER
SPA
SWE
(thanks Smoker1 and 999888)

Treasure Adventure game
* Translation Patches for French, German, Brazilian Portugese (thanks DukeNukemForever)

------ U ------

Unreal
* Translation Patch for German (subtitles) (thanks phantomias2023)

Unreal 2
* Translation Patch for German (thanks Bianco81)

Unreal Tournament 2004
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

------ V ------

Vampre the Masquerade: Redemption
* Translation patch for Italian (thanks AaronAmoth)
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

------ W ------

Warlords Battlecry 3
* Translation Patch for Brazilian Portugese (thanks Kowagaru)

Wing Commander 3
* English, French, German.
* Changes subtitles, audio stays in English.
* go to the Flight Control room, then activate the Main Terminal, click on "Controls", and now you can select the subtitles language
(thanks jon1138)

Wing Commander 4
* English, French, German
Edit the game shortcut (or create one to wc4dvd.exe), append " -l1" to the path if you want German and " -l2" for French (that's a minuscule letter "L", not number "1" or capital "i")
(thanks Tehnloss)

The Witcher: Enhanced Edition
* Text and audio: Czech, English, French, German, Hungarian, Italian, Polish, Russian, Spanish
* Text only: Traditional Chinese
* Text and audio can be changed independently.

The Witcher 2: Assassins of Kings
* Text and audio: English, French, German
* Text only: Italian, Spanish
* Text and audio can be changed independently.

World Rally Fever
* English, French

------ X-Z ------

----- Requests ------
* Patrician III: German (nom1)
* Realms of The Haunting: German (giver888)
* The Longest Journey: French (vanlock)
* Dungeon Keeper 2: French (jon1138)
* Broken Sword 3: German (Fesh)
* Jack Orlando: German (Fesh)
* Settlers 2: German (moonshineshadow)

----- List of confirmed UNILINGUAL games ------
Games listed below WILL EARN YOU REP if you find a fan translation so that the game in question should be moved up.
Additions to this list will get rep as well.

* 1nsane
* Commandos: Behind Enemy Lines (Ammo Pack)
* Creatures 1 (Albian Years)
* Creatures 2 (Albian Years)
* Disciples (contains options for German and French, but they seem to do nothing)
* Disciples 2
* Duke Nukem Manhattan Project
* Earth 2150 Trilogy
* Earthworm Jim
* Earthworm Jim 2
* The Feeble Files
* Ground Control
* Ground Control 2: Operation Exodus
* Hostile Waters: Antaeus Rising
* The Even More Incredible Machine (Incredible Machine Mega Pack)
* Return of the Incredible Machine Contraptions (Incredible Machine Mega Pack)
* The Incredible Machine - Even More Contraptions (Incredible Machine Mega Pack)
* Jack Orlando
* Kingdom: The Far Reaches
* Kingpin
* Knights and Merchants: The Peasants' Rebellion
* The Manhole
* Mob Rule
* realMyst
* Uru
* Alien Nations
* The Nations
* Postal 2 (Postal 2 Complete)
* Pure Pinball
* Raptor: Call of the Shadows 2010 Edition
* Redneck Rampage Collection
* Septerra Core
* Shattered Steel
* Syndicate
* The Temple of Elemental Evil
* Teen Agent
* Tex Murphy: Martian Memorandum (Tex Murphy 1+2)
* Tex Murphy: Mean Streets (Tex Murphy 1+2)
* VR Soccer '96

----- Contributors so far ------
Chronological order of first contribution

* gyokzoli
* darkbatman
* Teilnehmer
* Narakir
* eriktorbjorn
* carali
* cebewee
* Nodens
* DukeNukemForever
* vibi
* klaymen
* Ois
* Ba7oU
* Bianco81
* Itlodeo
* Elwin
* JasonSlaye
* Phobos666
* Elle85
* ERISS
* Frozen
* Spellbreaker1979
* sp0ken
* lrmcba
* AaronAmoth
* Vahron
* Nnexxus
* kjx
* Merchito
* sebarnolds
* Twan
* Ginnungagapp
* sentek
* ac2info
* Tehnloss
* Kowagaru
* Imp_Master
* jon1138
* stare33
* Ghildrean
* Rhineland
* phantomias2023
* Tehnloss

Though Planescape Torment has been released in German, there apparently is a translation for the English release. This is now added to the list.

As many of us (including me) has anonymous posts hidden by default, I'll repeat my message:

Though Planescape Torment has been released in German, there apparently is a translation for the English release. This is now added to the list.

Planescape Torment italian translation is here :
http://www.skyflash.it/2009/10/la-traduzione-in-italiano-di-planescape-torment-del-team-itp/

Great, added.

The listed Knights and Merchants patches are not translation patches but version patches. You can only install the English patch on the English game and the German patch on the German game, so they don't work as translations.

Ah, bugger, thanks for the info, I'll remove it.

French Planescape added, thanks to ERISS.