I've been making a JRPG-like combat system. I previously tried doing it in Twine 1.4, but I had trouble figuring out Macros. I strung together some of the currently implemented features into a narrative:https://grippli.neocities.org/rpg combat.html
I'm at a point where in order to add new features, I need to decide what stats combatants will have and what those stats do. Currently they just have Attack Power and Hit Points. One monster also has a non-zero Magic stat for testing purposes.
All in all an interesting learning exercise.