Some absolute gems here!
> If If you have a subsystem for pre-modern dentistry, this should be because it teaches the players something about your game world---not because it crossed your brain’s arbitrary realism threshold.
> Writing powers that just work, with no costs or prereqs, i.e. “you can walk on walls,” is messy design, but it gives players permission to hang out on every wall they see.
Overall, this is a great, accessible PDF chock-full of advice and practice on making a TTRPG with intentionality and care.
5/5