Here is the list of keys.
Title From At
Battlestar Galactica Deadlock Avantre Steam
Battlestar Galactica Deadlock Darkheart Steam
Codex of Victory Darkheart Steam
Cultist Simulator Moriendor Steam
Cultist Simulator Shagnak Steam
Cyberpunk 2077 Wisdom GOG
Darksiders II: Deathinitive Edition Shagnak Steam
DISTRAINT 2 Shagnak Steam
DmC: Devil May Cry Shagnak Steam
Dragon Age: Origins Strafe Steam
Elex (region locked 2) Darkheart Steam
Elex (region locked 2) Avantre Steam
Endless Space 2 Avantre Steam
Endless Space 2 Digital Deluxe Edition henriquejr Steam
Evoland Legendary Edition Avantre Steam
GemCraft - Chasing Shadows Darkheart Steam
Gorky 17 txa1265 Steam
Hard West Ivanwah Steam
Imperator: Rome Shagnak Steam
Kingdom Come: Deliverance Strafe Steam
Lichdom: Battlemage Darkheart Steam
Might is Right RPGWatch Steam
Might is Right RPGWatch Steam
Might is Right RPGWatch Steam
Might is Right RPGWatch Steam
NEOVERSE Shagnak Steam
Orwell: Keeping an Eye on You Shagnak Steam
Outward (region locked 3) Avantre Steam
Peaky Blinders: Mastermind Darkheart Steam
Planescape: Torment: Enhanced Edition Darkheart Steam
Quantum Replica Darkheart Steam
Railway Empire Avantre Steam
Septerra Core txa1265 Steam
Shadows Awakening Avantre Steam
Shining Resonance Refrain Avantre Steam
Star Wolves 3: Civil War Darkheart Steam
Tales of Berseria (region locked 1) Avantre Steam
The Keep Shagnak Steam
The Signal From Tölva Shagnak Steam
The Slormancer RPGWatch Steam
Thea The Awakening Moriendor Steam
Tower of Time Avantre Steam
Two Worlds Epic Edition txa1265 Steam
Two Worlds II Velvet Edition txa1265 Steam
Vendetta - Curse of Raven's Cry Shagnak Steam
Warhammer 40,000: Space Wolf Darkheart Steam
Warhammer: Chaosbane henriquejr Steam
Warhammer: End Times - Vermintide Shagnak Steam
Zombie Army Trilogy Shagnak Steam
Zwei: The Arges Adventure Avantre Steam
Zwei: The Ilvard Insurrection Avantre Steam
These are the mentioned region locks, which means the keys might not work here:
Region locked 1 AF, AL, BA, BI, BN, BY, CF, CG, CN, ER, HK, HT, ID, IQ, JP, KH, KP, KR, LA, LB, MK, MM, MN, MO, MY, PG, PH, RS, SG, LB, MK, MM, MN, MO, MY, PG, PH, RS, SG, SO, TH, TL, TW, UA, VE, VN, WS, YE, ZW
Region locked 2 AM, AR, AZ, BO, BR, BS, BY, BZ, CL, CN, CO, CR, EC, GE, GF, GT, GY, HN, IN, KG, KZ, MD, MX, NI, PA, PE, PY, RU, SR, SV, TJ, TM, TR, UA, UY, UZ, VE
Region lokced 3 AU, CX, HM, NZ