In some featured games I saw that it was possible to have someone type in an answer. Like for example there was a riddle being asked and instead of options there were all the letters in the alphabet listed and you got to click on one to spell something. This is crucial to a story im making.
1) This goes in the advanced editor forum.
2) I'll tag a couple of the best people to help you,
@Bradindvorak
@Nmelssx
@berkazerka
(I vaguely know how to do it, kinda sorta maybe, but probably not enough to help you at all.)
http://chooseyourstory.com/story/Five%20Pin%20Code
^This will give you an idea at least. There is an even more efficient way to do it than shown there, but I don't have the time to write up a new guide.
See also - On-Page Variable Tricks