Just like Mark said, you've made some serious improvements with this game over the last couple. Sure you have him for some crazy inspiration BUT you took it further with the lore and the games. Excellent job Lixian.
If you want to play this I HIGHLY recommend getting Lutris. Then go through and add itch.io as a source by getting the API key from your itch account settings. It is the best way to play most itch.io games that don't have a Linux package.
That's what I did with my Steam Deck too. I also made a layout that works pretty good, to bad the game isn't on steam. Then I could share it on the community hub.