While the devs didn't reply yet, I can provide an answer to what it was made with:
Ren'py. Originally a Visual Novel program, but it requires one to learn a programing language specifically for it, sadly.
And I hope your dyslexia will get better. And that more people will write less blocks of text and with pauses, like I did.
Still good luck if you ever plan to make a game yourself and stay safe :)