Artifex Mundi Leftover Keys Train

Artifex Mundi bundles pop up a LOT. And since I'm on a quest to have every single title developed and/or published by them in my library, I tend to buy a lot of those bundles. Which means, lo and behold, extra keys. Especially if one (such as myself) were to buy a happy hour bundle to make an Eventide: Slavic Fable giveaway (which doesnt start until the 26th because idk) and end up with three bonus bundles. LOL WHOOPS

Anyway, heres a train for you all.

BONUS KEYS, GET EM WHILE THEYRE HOT

Grim Legends: The Forsaken Bride: 52?G3-4?440-?IYD0 (a hint would be nice here, eh?)
Time Mysteries: Inheritance -- Remastered: 4YZGM-6VFX9-?6T?P (just a tiny little hint?)
Grim Legends 2: Song of the Dark Swan: 4RXY9-H?I93-42WBQ (a hint would be totally nice right about now)