Great app kept me interested longer than any other language program. Only complaint is that you can't rotate the screen which leads to more typos (at least for me) not being able to switch to the wider screen.

This game has potential. The questions are short though pretty tricky and I've read the books numerous times. The problem is you have to spell your answers correctly, and I am lousy at spelling, so that made it very frustrating knowing the answer but not being able to enter it correctly.