If you've never heard of interactive fiction before, then I suggest quickly skimming through the
beginner's guide and then playing a couple of
classic games of the text adventure genre. And don't forget the
cheat sheet 
If you get around to playing a game, then I'd appreciate if you could provide your feedback on the following topics. It would help me to fine- tune the software.
1. Is the font size alright?
2. Currently only lower-case English letters can be entered which is enough for most games. However, there are many games in other languages. Is i18n needed?
3. I really only thoroughly tested games written for Glulx and Z-machine interpreters, whereas Gargoyle supports a
handful of them. If you happen to play any of them, then let me know how it went.
You can raise bugs either in this thread or in the Gargoyle
bug tracker.