Discount code for:

Legend of Keepers: Career of a Dungeon Manager 50%
Legend of Keepers: Feed the Troll - DLC 15%
Legend of Keepers: Return of the Goddess - DLC 35%

https://www.gog.com/redeem/UE8JTEEJURWWNTUFCgog3
(Remove "gog" - ends on February 10th, 2022, at 2 PM UTC.)

Here's yet another discount code for Legend of Keepers: Career of a Dungeon Manager and its DLCs:

UE8JCTFNFU7NFUVLK7

The Surge 1 & 2

A9UF0F544D235DD984

The Surge 1 & 2

A9UF97BD1134F81A5D

Another 75% off the Surge 1 and 2 (code can be used for either separately, afaict, if you already have one of them), good until February 13. Codes are for the "Augmented" and "Premium" editions respectively; that is, with dlc included. Just remove the ranged option from the code below.

A9UF5BE723ranged optionB13A89E9

The Surge 1 & 2

Discount code: A9UF17D8005C84C850

75% discount code for:

The Surge - Augmented Edition
The Surge 2 - Premium Edition

https://www.gog.com/redeem/A9UFBD55BD0E453ECgog1
(Remove "gog" - ends on February 13th, 2022, at 2 PM UTC)

Surge 1 & 2
https://www.gog.com/redeem/A9UF434EA0883950B8

A9UF4D2E1B0A148560

(The Surge 1 & 2)

Another code for

The Surge - Augmented Edition
The Surge 2 - Premium Edition

A9UF339297CBC81E0Fxxx (Remove xxx)

The offer ends on February 13th, 2022, at 2 PM UTC.

The Surge - Augmented Edition + The Surge 2 - Premium Edition (-75%)
https://www.gog.com/redeem/A9UF2GOG23E3CC509GOG98A2
[remove all the GOG intercalations]

Code expires on Feb 13, 2022, 2:00 PM UTC.

The Surge - Augmented Edition & The Surge 2 - Premium Edition:
A9UFF549168349E0C8xxx
(remove the "xxx" from the end, last day to redeem 13th February 2PM UTC)

All-time high discount on The Surge 1 & 2. The code is:

A9UF13E12B807D7850GOG

(remove GOG from the end, to use it)

Same as above:
"The Surge 1 & 2"

A9UF97DF3GOG9C20FD85D

Remove GOG

The Surge 1 & 2

A9UF053DC06C1D8CD5