Thank you so much for noticing. I didn't even know there was a difference between Orthodox/Catholic and Protestant canons until a week after the site was live.

I spent a decent amount of time trying to add the Deuterocanonical books. Ultimately I put it on hold, because I was worried that adding those books would make a challenging game even harder (at least for my initial audience of 20 family and friends). I also wondered if adding those books would put off any Protestant visitors... but I see their omission has caught your attention, that's Orthodox 1, Protestant 0. I'll find an elegant way to work them in.

And I never thought of adding an RSS feed! I'll add that to the todo!