Neat idea.
[spoilers!] It’s pretty clear what’s happening from near the beginning though, once you roll the 4th one or so it’s clear that you are on rails. As a player then, I don’t want a 6, I want more story. That’s why I, too, picked the fair dice. Just to go off the rails, to have a chance to see something different. – Which is interesting because nearly everyone else seems to have had the same thought – by yearning to be free of conformity I have instead given in to it.
I think it’s so clear (that the rolls are fixed) because games like this are not alone anymore. They are on the way to becoming an own genre. It will be harder to continue, because the need to refer to other games of this type in these games themselves.
Still, it always gives me a jolt to see things like this in game-jams too.