Re-roll Math in Blades in the Dark

As I continue to play-test my Blades in the Dark hack, I’ve done more and more fiddling with some of the “side” mechanics that are a bit off to the side of the core game-play loop. And, once again, I find myself looking at re-rolls.

My original intent in investigating this was to replace the “Devil’s Bargain” mechanic in Blades. In Blades, anyone at the table can suggest a twist or complication the active player can agree to in order to gain +1 die to the roll. It is a good, thematic mechanic for Blades, because it is inherently risky. A +1 can really help you out, especially if your dice pool is low, but it could also just as easily provide no benefit, as you could easily have rolled the result you needed without the extra die, or the extra die could not give you the result you want. It’s less a bargain, more a gamble, with fits with the roguish, things get you into trouble theming of Blades.

For my game, I want a mechanic where friendship, relationships, etc pull you out of trouble, where your friends are team-mates, there to help you when you need them. I think this is where re-rolls excel, because they are most effective as a ‘saving throw’ then an added gamble. The Devil’s Bargain asks you what your willing to risk to get a better shot at winning big, while Intimacy, like the FATE mechanics it’s roughly based on, asks you what you’re willing to spend or sacrifice to avoid failure.

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