Amazon Prime has Dishonored 2 Code for GOG as a giveaway. Go go go!

Edit: Might have some problems claiming for now. Give it a while and see if you can get it later.

Probably last give away, Daymare: 1998 free from the 30th of December 2022 till the 1st of January 2023.

Happy New Year people!

Evil Within 2 free if you have Amazon Prime.

Link to news article on PC Gamer

Also Beat Cop apparently. Scroll all the way down on the Prime Gaming page

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List of Temporary Free Games - Free with Purchase Part 2
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THE SURGE
Startrail says: Free with every purchase of Mechwarrior 5 Mercenaries from the 27th of May 2021 till the 2nd of June 2021

CORRIDOR 7
Startrail says: Own 7 of Ziggrat's Games on GOG to get this free from the 22nd to 28th of October 2021 as part of 2nd Anniversary Celebrations

DEADLY DOZEN
Startrail says: Own 10 of Ziggrat's Games on GOG to get this free from the 22nd to 28th of October 2021 as part of 2nd Anniversary Celebrations

LEISURE SUIT LARRY - WET DREAMS DON'T DRY
gambling8nt says: Free if purchase Leisure Suit Larry - Wet Dreams Dry Twice via newsletter from 11 till 13 October 2021

INNER WORLD
Startrail says: Free if purchasing Truberbrook via newsletter from 18 till 20 October 2021

THE COMA RECUT
ariaspi says: Free with purchase of Vambrace Cold Soul via newsletter from 15 till 18 November 2021

PIZZA CONNECTION 1
Pajama says: Free with purchase of Pizza Connection 3 via newsletter from 23 till 25 December 2021

PIZZA CONNECTION 2
Pajama says: Free with purchase of Pizza Connection 3 via newsletter from 23 till 25 December 2021

DEAD AGE 1
Bridgekeeper says: Free with purchase of Dead Age 2 via newsletter from 30 till 31st December 2021

PSYCHONAUTS
Pendreagorn says: Free with purchase of Psychonauts 2 via newsletter from 31 March till 3 April 2022

HUNIECAM STUDIO
maestroruffy says: Free with purchase of HuniePop 2: Double Date via newsletter from 14 till 17 April 2022

SHADOW TACTICS : BLADES OF THE SHOGUN
Startrail says: Free if purchasing Aiko's Choice via Newsletter from 17 till 20 October 2022

WORLD CHAMPIONSHIP BOXING MANAGER
Startrail says: Free when purchasing special bundle which includes World Championship Boxing Manager 2 from the 17th till 30th of January 2023

THREE KINGDOMS STORY: CONUSSIA
Startrail says: Free with every purchase of The Book of Bondmaids from 26th January 2023 till the 9th of February 2023

LORDS OF MAGIC: SPECIAL EDITON
Startrail says: Free with every purchase of Spellforce:Conquest of Eo from the 2nd to 10th of February 20233

AKANE
Startrail says: Free with every purchase of Cyberpunk Essential Colelction from the 10th till 30th of June 2023

WARHAMMER 40,000: CHAOS GATE
L-O_1 says: Free with purchase of Warhammer 40,000: Rogue Trader from the 7th till 14th of December 2023

WARHAMMER 40,000: RITES OF WAR
L-O_1 says: Free with purchase of Warhammer 40,000: Rogue Trader from the 7th till 14th of December 2023

Lists from Opening Post has all been updated as of today. *phew* need to do it more regularly.

Found a new source of "Free with Purchase Games" and that's via newsletter, hence the rapid expansion of the "Free with Purchase List"

Most obtained from the Newsletter Discounts thread. Have accredited the listing accordingly to the first person who mentioned the promotion. Just did a search in the thread for keywords "free"; "gift"; "complimentary"; "copy"

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List of Free Games - Permanently Free Games with Purchase
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QUAKE II RTX
solar_dome says: Free if you own Quake II from 19 August 2021

THE CHRONICLES OF MYRTANA:ARCHOLOS
Startrail says: Free if you own Gothic 2 Gold from 11 December 2021

OUTWARD: DEFINITIVE EDITION
LegoDnD says: Free if you own original Outward + The Three Brothers DLC from 17 May 2022

MAFIA II DIRECTOR'S CUT
Timboli says: Free with every purchase of Mafia II Definitive Edition from 23rd August 2022

TWINSEN'S LITTLE BIG ADVENTURE CLASSIC - ORIGINAL EDITION
argamasa says: Free with purchase of Twinsen's Little Big Adventure Classic from October 27 2022. Shows up as DLC.

TWINSEN'S LITTLE BIG ADVENTURE 2 CLASSIC - ORIGINAL EDITION
argamasa says: Free with purchase of Twinsen's Little Big Adventure 2 Classic from October 27 2022. Shows up as DLC.

Free World Championship Boxing Manager if purchasing the Special Bundle for World Championship Boxing Manager 2, from the 17th till 30th of January 2023

News item here and bundle link here

New free game Haven Park as part of 2023 New Year Sale from the 20th to 22nd January 2023

Go go go!

CDPR Goodie Pack giveaway as part of 2023 New Year Sale from the 28th to 30th of January 2023

Three kingdoms story: Conussia free with every purchase of The Book of Bondmaids from the 26th of January till the 9th of February.

News item here

Elder scrolls 3 morrowind is free as part of Amazon Prime giveaway for the month of February

Lords of Magic: Special Edition free with every purchase of Spellforce: Conquest of Eo from the 2nd to 10th of February 2022

This no longer appears to be the case.

Ah you're right. They've changed it to a DLC. Thanks!