Nice game. As a quality-of-life feature I would suggest that dragging a number back to the top to an invalid slot should automatically move it to a valid slot (say, the first empty valid slot, or the closest valid empty slot). Also, you could have a "clear" button to restart your current turn.
Viewing post in PEMDAS jam comments
There are a lot of QOL improvements (and suggestions from these comments) that I'm excited to make. We actually have a key to replace all the dice now, "R", but it's buried in our terrible "Operations Manual" - that is the first thing I have to fix. Anyway, thanks for playing and for the suggestions.