I'm happy you're enjoying this game! It's the TTRPG I have put the most effort in making so far! ^^
Hello again! I have thought of making more games with different adventures and genres that use the 13 Days mechanic. As for if there's anything more for 13 Days specifically, as of right now, no. But if I ever get a hit of inspiration, I could try expanding it with more prompts!
I am not aware if any forums are showcasing playthroughs of 13 Days. I know the game was listed on a reddit post of free TTRPGs. but that's about it.
I have not really used other journaling tools to enhance gameplay before, but it's something I'd like to try out!