Alexim: The updated list of all the developers and games found in the GOG database that so far haven't yet been made official:
Blyts - Slender Threads (Prologue Sept. 2021)
GoodbyeWorld Games - Before Your Eyes (Released)
Luminawesome Games Ltd. - Lumote (2021)
Goblinz Publishing, Maple Whispering Limited - A Long Way Down (Released)
Hummingwarp Interactive - Secret Little Haven (Released)
Piggyback Interactive Limited - Cyberpunk 2077 - The Complete Official Guide
Frontier - Thrillville: Off the Rails (Released)
Sekai Project and VNs: Vifth Floor - Just Deserts or VOID (Released)
Mr. Tired Media. - Undead Darlings ~no cure for love~ (Released)
Qoobrand - Majo Koi Nikki series (Released)
Devolver Digital: WolfEye Studios - Weird West (Fall 2021)
Terri Vellmann, Doseone - Sludge Life (Released)
Leonard Menchiari, Flying Wild Hog - Trek to Yomi (2022)
Galvanic Games - Wizard with a Gun (2022)
Card Shark (2021)
Shadow Warrior 3 (2021)
Inscryption (2021)
Terra Nil (TBA)
Glitch Factory - No Place For Bravery (2021)
Leonardo Interactive, Woodland Games - Hell Architect (18 August 2021)
Pixpil - Eastward (16 Sept. 2021)
Lance, 3-50 - Onde (Coming Soon)
IO Interactive A/S, Feral Interactive - HITMAN Game of the Year Edition (Released)
Hidden data:
Mafia: Definitive Edition (Released)
I rmember that "The Abbey" once was found in the GOG database.