Speaking of PbtA games--specifically Ironsworn. I know this isn't a "help me understand this" thread but... help me understand this, because I am having a total block. And I've heard it's an awesome game so I want to give it a try, but I can't get past page 13.
OK, you roll d6 action die + some stuff, and also 2d10 and try to roll under the total of action die + stuff. Weird, but OK. Since this game doesn't require a GM to set target numbers, and this game doesn't do the "On a 10+, yadda yadda" that other PbtA games have, you need rules to deal with that.
But then, under the momentum section, if you have negative momentum, you must cancel your action die if it matches what's on your die. The rules then say "You still check the success of your move by comparing your stat plus your adds to the challenge dice, but you won’t have your action die to help you." And that's where my brain stops working, because (a) how does your action die help you--it seems like it just provides a target number for you--and (b) without the action die, how do you determine if you've succeeded on a roll or not?
I feel like the answer is staring me in the face and I just can't see it.