Thank you! I always feel like I struggle with worldbuilding, so having two academics rambling on about their field of study was a very smooth framework. Letting the characters have fun studying the world attaches emotional stakes to it, I guess?
And I'm glad that the game stuck the landing at the end! I edited a portion of an old NaNo piece for this, and though the letters continue after that moment, it really felt like the best moment to end it on. And the fact that I now had visuals meant that I had an opportunity to do something that pure prose hadn't initially allowed. ^u^ Man, I love visual novels!