Just made a list of the games that are coming out on the C64 Mini Black by Retro Games Ltd in case you wanted to find them yourself! This isn't meant to be a link to where you can download them for free, it's just a list of where you can find them online to download (and pay if they are selling them for money!) in case you're like me and already have a C64 mini and don't want to buy a whole 'nother chunk of plastic!
A Pig Quest
https://piggy18.itch.io/a-pig-quest
Caren and the Tangled Tentacles
https://www.astro.physik.uni-potsdam.de/~mwendt/caren/
Galencia
https://galencia.itch.io/galencia
Good Kniight
https://psytronik.itch.io/good-kniight
Grid Pix
https://thalamusdigital.itch.io/gridpix
Guns ’N’ Ghosts
https://psytronik.itch.io/guns-n-ghosts-c64
Hessian
https://psytronik.itch.io/hessian
Hunter’s Moon Remastered
https://thalamusdigital.itch.io/hunters-moon-remastered
It's Magic 2
https://protovision.itch.io/its-magic-2
Joe Gunn: Gold Edition
https://psytronik.itch.io/joe-gunn
Knight ’N’ Grail
https://psytronik.itch.io/kng
Metal Warrior Ultra
https://protovision.itch.io/mw-ultra
Millie & Molly
https://thalamusdigital.itch.io/millie-and-molly
Nixy and the Seeds of Doom
https://h4plo.itch.io/nixy2
Ooze: The Escape
https://h4plo.itch.io/ooze
p0 Snake
https://rgcddev.itch.io/p0-snake
Pains ’N’ Aches
https://psytronik.itch.io/painsnaches
Planet Golf
https://www.lemon64.com/game/planet-golf
Rocky Memphis: The Legend of Atlantis
https://psytronik.itch.io/legend-of-atlantis
Runn ’N’ Gunn
https://thalamusdigital.itch.io/runn-n-gunn
Sam’s Journey
https://protovision.itch.io/sams-journey
Shadow Switcher
https://drwuro.itch.io/shadow-switcher
Spinning Image
https://carletonhandley.itch.io/spinning-image
Steel Ranger
https://psytronik.itch.io/steelranger
Yeti Mountain
https://protovision.itch.io/yeti-mountain