Blades in the Dark dice probability
Exact odds for every pool from 0 to 8 dice, worked out from every possible roll. The dice roller shows the same figures for your own pool and stress.
Action, fortune and engagement rolls
The highest die counts. 0 dice means roll 2 and keep the lowest, with no critical. An assist adds a die, and so does a push or a Devil's bargain (one or the other): move one row down for each.
| Dice | 6 or better | 4 or better | Critical | 6 | 4/5 | 1-3 |
|---|---|---|---|---|---|---|
| 0 (2, lowest) | 2.8% | 25.0% | 0% | 2.8% | 22.2% | 75.0% |
| 1 | 16.7% | 50.0% | 0% | 16.7% | 33.3% | 50.0% |
| 2 | 30.6% | 75.0% | 2.8% | 27.8% | 44.4% | 25.0% |
| 3 | 42.1% | 87.5% | 7.4% | 34.7% | 45.4% | 12.5% |
| 4 | 51.8% | 93.8% | 13.2% | 38.6% | 42.0% | 6.3% |
| 5 | 59.8% | 96.9% | 19.6% | 40.2% | 37.1% | 3.1% |
| 6 | 66.5% | 98.4% | 26.3% | 40.2% | 31.9% | 1.6% |
| 7 | 72.1% | 99.2% | 33.0% | 39.1% | 27.1% | 0.8% |
| 8 | 76.7% | 99.6% | 39.5% | 37.2% | 22.9% | 0.4% |
Resistance roll: stress you take
You take 6 stress minus your highest die. A critical clears 1 stress instead.
| Dice | Clear 1 | 0 | 1 | 2 | 3 | 4 | 5 | Average |
|---|---|---|---|---|---|---|---|---|
| 0 (2, lowest) | 0% | 2.8% | 8.3% | 13.9% | 19.4% | 25.0% | 30.6% | 3.47 |
| 1 | 0% | 16.7% | 16.7% | 16.7% | 16.7% | 16.7% | 16.7% | 2.50 |
| 2 | 2.8% | 27.8% | 25.0% | 19.4% | 13.9% | 8.3% | 2.8% | 1.50 |
| 3 | 7.4% | 34.7% | 28.2% | 17.1% | 8.8% | 3.2% | 0.5% | 0.97 |
| 4 | 13.2% | 38.6% | 28.5% | 13.5% | 5.0% | 1.2% | 0.1% | 0.62 |
| 5 | 19.6% | 40.2% | 27.0% | 10.0% | 2.7% | 0.4% | 0.013% | 0.37 |
| 6 | 26.3% | 40.2% | 24.7% | 7.2% | 1.4% | 0.1% | 0.0021% | 0.18 |
Chance of trauma when you resist
With 9 stress boxes you take trauma when the cost reaches your last box. With 3 or fewer marked, even the worst roll (5 stress) is safe.
| Stress | 0 dice | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|---|
| 4 marked | 30.6% | 16.7% | 2.8% | 0.5% | 0.1% | 0.013% | 0.0021% |
| 5 marked | 55.6% | 33.3% | 11.1% | 3.7% | 1.2% | 0.4% | 0.1% |
| 6 marked | 75.0% | 50.0% | 25.0% | 12.5% | 6.3% | 3.1% | 1.6% |
| 7 marked | 88.9% | 66.7% | 44.4% | 29.6% | 19.8% | 13.2% | 8.8% |
| 8 marked | 97.2% | 83.3% | 69.4% | 57.9% | 48.2% | 40.2% | 33.5% |
Indulging your vice
Roll your lowest attribute and clear stress equal to the highest die. Clear more than you had marked and you overindulge.
| Stress | 0 dice | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|
| 0 marked | 100% | 100% | 100% | 100% | 100% |
| 1 marked | 69.4% | 83.3% | 97.2% | 99.5% | 99.9% |
| 2 marked | 44.4% | 66.7% | 88.9% | 96.3% | 98.8% |
| 3 marked | 25.0% | 50.0% | 75.0% | 87.5% | 93.8% |
| 4 marked | 11.1% | 33.3% | 55.6% | 70.4% | 80.2% |
| 5 marked | 2.8% | 16.7% | 30.6% | 42.1% | 51.8% |
Group action
Everyone rolls and the best result counts. The leader takes 1 stress for each PC whose best die was 1-3.
| PCs | 1 die each: 6 or better | Average leader stress | 2 dice each: 6 or better | Average leader stress |
|---|---|---|---|---|
| 2 PCs | 30.6% | 1.00 | 51.8% | 0.50 |
| 3 PCs | 42.1% | 1.50 | 66.5% | 0.75 |
| 4 PCs | 51.8% | 2.00 | 76.7% | 1.00 |
| 5 PCs | 59.8% | 2.50 | 83.8% | 1.25 |
Rules from the Blades in the Dark rules reference and Player Kit. This work is based on Blades in the Dark, product of One Seven Design, developed and authored by John Harper, and licensed for our use under the Creative Commons Attribution 3.0 Unported license. Unofficial fan tool, not endorsed by One Seven Design.