itch.io

To answer your question:

1. He probably might be if he's interested. I wanted to show him some of my own pixel art he can use for the game.
2. The game has mod support, there's now a GameBanana page for this game. But making a mod requires you to join Discord for advice. Maybe wait until the creator finishes on his project.
3. More content is on the way, be patient. It'll be worth it.
4. Same!