Hello,
Interesting idea, i wish you much fun with it. Old and
strange fonts, cryptographic teaching, there a lot of
room for fun in this for people who may not otherwise
be able to understand cryptology.
I really liked the first game called Enchanter from the
old Infocom series. I never was able to play the second
(or later if there were any), but always wanted to... If
you've not played it give it a try.
Having puzzles to solve and using scrolls in combinations
were the fun parts. Fighting, well, I'm ok with some, but
I like games where it isn't the only reason for being.