Hi! While the rules are extremely light enough that it can be played solo...it may not be a very satisfying experience. It is played best with at least 2 players. But I will be working hard in the next few days to try and convert the Tiny Stories experience into a solo version.
Thanks so much for checking in, I really appreciate it. I did actually manage to draft a very, very simple ruleset but I never got around to posting it, and it got buried eventually. Your post reminded me to pick it up again. I'll reply again I've uploaded the solo version in this page.