14k for a play through is a pretty good amount! It’s often easy to think that word count isn’t enough, but obviously it’s an interactive fiction game so there are so many different branches that readers may not even get to if they don’t play your game more than once.
In terms of whether people will want to read it, there’s always going to be someone who wants to read your story. Just because it may not be one person’s cup of tea, doesn’t mean someone else won’t absolutely adore it — there’s always a place for more stories.
Can’t wait to read your demo when it’s out!