What if my game is interactive fiction but purely audio, is that okay?
I was planning to use my own tool, Parser Commander. It is still under development but i recently use it in a game based in the story "Celephaïs" written by H.P.Lovecraft. That game is in Spanish, at least by the moment, but can be played here if you want to take a look:
Let's see where this ship goes! :D