For bots or ninja:

Deponia (GOG)
http://www.gog.com/redeem/YLG4AE70269AF5B908

Evil Genius 2 - Mr Scuffles DLC
PMPM8-430VB-7VVEG

Generation Zero: Schweet Vanity Pack DLC
VZ6RL-H2FYZ-7AZBR

Video Vlogger Story

HIHZA-W5ZTI-E780G

KartRider: Drift Closed Beta - ?QILF-706RE-TV!JG
Your Doodles Are Bugged! - ?LBGP-!ZHNE-!YAXI

? = 4 + 4 + 2 - 1
! = 4 + 4 - 5 - 2 + 1

Manual Samuel
4TD0X-8I6CN-HILIE

Put the first section last

A few keys from a previous choice I don't want hanging around anymore, but refuse to adhere to the 55 mile restraining order I had put on them.

Train Station Renovation - T3VNT-KVCVI-AHBBL
Lovecraft's Untold Stories - RKZZM-HPLRY-3CMX3
Iris and the Giant - REEEJ-C8RF5-9GA3T

Have it them, silent and ungrateful ones.

Crypts of Anak Shaba Steam Key: QEZ79-LPXCA-H54?6

?=G

Dragon Age Inquisition Origin; might be expired

4LFP-LB9E-AG&&-SQ7S-E2PU

&& = Virginia

Hi! No idea if this will work. "Tomb Raider IV" a key from Fanatical, a mystery game I buy without know what I will have. Hope it will work and have fun. :)
DBGKI-GH7AG-522CD

2YYGN-4226V-HL6VQ
Battle of Angels Soundtrack

YJWV9-TBGG2-GZH64
O.C.D. - Comorbidity Pack

Z5BHE-E30YZ-6IH0G
PBT - GOLD

dunno if they work but take a chance.

Genshin Impact v2.3 50 primogemns Unknown if still valid

[Claimed]

?=2+3

4VTI4-LVGYV-ZJAT4 - Crystal Catacombs
45NXL-H6DA6-0MTC4 - Deadly Escape
9K3CB-JW5DF-6B3HP - Demented
I8T7J-9QQJN-JXBMR - Freedom: A Time to Reckon
70EIN-K0I9C-VHTR0 - Frontier
3NCMT-VNQDZ-CV6BP - Giants: Citizen Kabuto
DIHAZ-M6RCN-TBMF0 - No clue; doesn't say in Steam after trying to redeem
A7H2N-DFP2R-Y82B9 - Heavenly Battle
0D3JE-XYMFC-2DKV9 - Hidden Objects 5-in-1
EY09E-VH7DF-X2CE8 - Invisible Mind
BIAND-654L9-Y9K99 - Judgement
8I020-LQYQ2-YMVLA - King of Dragon Pass
BVPLZ-VW4HR-HEKJP - Magical Eyes - Red is for Anguish
BJ9AR-6B2LE-HH5AJ - Medieval Battlefields - Black Edition
ADZME-TJFMP-GAD3J - Obscure Realm

These are random Groupees keys from years ago. They were revealed but probably accidentally left as "not used", so I doubt any of these are even valid. Thus, wasn't gonna bother making it harder to redeem.

Eden Falling for Alpha Testing
J4F#W-GAYHB-#VDMC

=8

07XRY-4ZQ0Q-TQCFB - Zenza
72Q4J-ZGEJ4-6GY3W - War of Spells
4KDIX-ILEME-6IHYG - Ubermosh: Santicide
D5GIM-W74FL-ECR5F - Turbo Pug
4ICN3-AAH58-JA6ZZ - TTV3
8JRWC-98VZF-C6EQ7 - Tomato Jones
6DN7K-72BCT-50TQV - The Trials of Olympus II: Wrath of the Gods
DAPY5-GA59B-VQPK2 - Super Mega Neo Pug
IT2YB-5GAE2-HFKGA - Super Kitty Boing Boing
2GKDP-K4465-EMAPB - Slavistan
EMCJ0-ZBXC0-DVB8Z - Potato Thriller
3G65E-0MFPX-DD0VL - Paintball Extreme
86PX5-ZQFFJ-6JCPN - Onikira - Demon Killer
7YEW8-L8EEF-280M9 - Odysseus: Long Way Home

twoXG5Q-M3E9T-Q4BsevenK - Starpoint Gemini
four368P-ERYMC-RK7sevenN - Rush Bros
twoIKXM-EB3WY-eightMAZE - Ravensword: Shadowlands

Part 2 (final part) of lost Groupees keys. The last 3 were "Potentially unrevealed" so they have a slightly higher chance of working.

The Whispered World Special Edition (GOG)
http://www.gog.com/redeem/5SZKFB07F3A1317501

Keys for The Desolate Hope (free game on steam, but you might get +1 to your games count)
RV(three)GJ-AVRRE-GIWB6
RTVER-J(nine)GYJ-Z5KR5
RTL(six)Y-L9K42-FYDRG
RTWCW-GA(five)W4-J3KZA

Keys for Runes of Brennos (Same deal, but also has trading cards)
T(forty-six)C7-6ZF4P-N57VX
T(forty-two)G7-6MLT5-LW7ZJ
T3X(four)D-P8C28-2ZZHF
T3XZN-7LTC(five)-PCGGL

Commandos 3: Destination Berlin
CI3RW-XALZ9-M54M 3

Ion Assault
CQBIB-34LEH-MEA(8)K

Labyrinthine Dreams
B XZPN-2KYCQ-8WJ5H

Flatout
EGHV3-3ARTC-CN38I

Quixzel Rush Tooth Protector
DPG4B-YVZ09-CV?0C
=D

Need For Speed: Hot Pursuit on Origin:
9?5V-KKLN-LY47-4SAL-?UDH

? = 4+4

Quixzel Rush Tooth Protector

GKA6?-5RVGM-P7XVT

? = 1+1

Dead Bits: 9G!0$-3FW76-JJ4RJ
Walden and the Werewolf : !E3ZR-C5?I6-VRIYM B9C3?-TZ?7E-TVR56
Woodle Tree Adventures: 5I!DR-?6YHF-G0$PM
Particula: TFB6!-QN?Y0-!IX82 EZ2BC-GRI4J-3EFH$
VR MMO: 5T9Q8-0YT6?-VQ4EE
Endorlight: C22!Z-QZMQ4-3F22Q
The Walking Dead: B?PGZ-50QIV-ARDXX

!=A ?=L $=K

Thanks for Walden and the Werewolf: B9C3?-TZ?7E-TVR56

Taken, not by me:
Dead Bits: 9G!0$-3FW76-JJ4RJ
Walden and the Werewolf : !E3ZR-C5?I6-VRIYM
Particula: both keys
Endorlight: C22!Z-QZMQ4-3F22Q
The Walking Dead: B?PGZ-50QIV-ARDXX